src/login/logind-dbus.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <sys/stat.h>
   5 #include <unistd.h>
   6
   7 #include "sd-device.h"
   8 #include "sd-messages.h"
   9
  10 #include "alloc-util.h"
  11 #include "audit-util.h"
  12 #include "bootspec.h"
  13 #include "bus-common-errors.h"
  14 #include "bus-error.h"
  15 #include "bus-get-properties.h"
  16 #include "bus-locator.h"
  17 #include "bus-polkit.h"
  18 #include "bus-unit-util.h"
  19 #include "bus-util.h"
  20 #include "cgroup-util.h"
  21 #include "device-util.h"
  22 #include "dirent-util.h"
  23 #include "efi-api.h"
  24 #include "efi-loader.h"
  25 #include "efivars.h"
  26 #include "env-file.h"
  27 #include "env-util.h"
  28 #include "escape.h"
  29 #include "event-util.h"
  30 #include "fd-util.h"
  31 #include "fileio-label.h"
  32 #include "fileio.h"
  33 #include "format-util.h"
  34 #include "fs-util.h"
  35 #include "logind-action.h"
  36 #include "logind-dbus.h"
  37 #include "logind-polkit.h"
  38 #include "logind-seat-dbus.h"
  39 #include "logind-session-dbus.h"
  40 #include "logind-user-dbus.h"
  41 #include "logind.h"
  42 #include "missing_capability.h"
  43 #include "mkdir-label.h"
  44 #include "parse-util.h"
  45 #include "path-util.h"
  46 #include "process-util.h"
  47 #include "reboot-util.h"
  48 #include "selinux-util.h"
  49 #include "sleep-config.h"
  50 #include "special.h"
  51 #include "serialize.h"
  52 #include "stdio-util.h"
  53 #include "strv.h"
  54 #include "terminal-util.h"
  55 #include "tmpfile-util.h"
  56 #include "unit-name.h"
  57 #include "user-util.h"
  58 #include "utmp-wtmp.h"
  59 #include "virt.h"
  60 #include "wall.h"
  61
  62 /* As a random fun fact sysvinit had a 252 (256-(strlen(" \r\n")+1))
  63  * character limit for the wall message.
  64  * https://git.savannah.nongnu.org/cgit/sysvinit.git/tree/src/shutdown.c#n72
  65  * There is no real technical need for that but doesn't make sense
  66  * to store arbitrary amounts either. As we are not stingy here, we
  67  * allow 4k.
  68  */
  69 #define WALL_MESSAGE_MAX 4096U
  70
  71 #define SHUTDOWN_SCHEDULE_FILE "/run/systemd/shutdown/scheduled"
  72
  73 static int update_schedule_file(Manager *m);
  74 static void reset_scheduled_shutdown(Manager *m);
  75 static int manager_setup_shutdown_timers(Manager* m);
  76
  77 static int get_sender_session(
  78                 Manager *m,
  79                 sd_bus_message *message,
  80                 bool consult_display,
  81                 sd_bus_error *error,
  82                 Session **ret) {
  83
  84         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  85         Session *session = NULL;
  86         const char *name;
  87         int r;
  88
  89         /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
  90          * and returns that. If not and 'consult_display' is true, this returns the display session of the
  91          * owning user of the caller. */
  92
  93         r = sd_bus_query_sender_creds(message,
  94                                       SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
  95                                       (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
  96         if (r < 0)
  97                 return r;
  98
  99         r = sd_bus_creds_get_session(creds, &name);
 100         if (r < 0) {
 101                 if (r != -ENXIO)
 102                         return r;
 103
 104                 if (consult_display) {
 105                         uid_t uid;
 106
 107                         r = sd_bus_creds_get_owner_uid(creds, &uid);
 108                         if (r < 0) {
 109                                 if (r != -ENXIO)
 110                                         return r;
 111                         } else {
 112                                 User *user;
 113
 114                                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 115                                 if (user)
 116                                         session = user->display;
 117                         }
 118                 }
 119         } else
 120                 session = hashmap_get(m->sessions, name);
 121
 122         if (!session)
 123                 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 124                                          consult_display ?
 125                                          "Caller does not belong to any known session and doesn't own any suitable session." :
 126                                          "Caller does not belong to any known session.");
 127
 128         *ret = session;
 129         return 0;
 130 }
 131
 132 int manager_get_session_from_creds(
 133                 Manager *m,
 134                 sd_bus_message *message,
 135                 const char *name,
 136                 sd_bus_error *error,
 137                 Session **ret) {
 138
 139         Session *session;
 140
 141         assert(m);
 142         assert(ret);
 143
 144         if (SESSION_IS_SELF(name)) /* the caller's own session */
 145                 return get_sender_session(m, message, false, error, ret);
 146         if (SESSION_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
 147                 return get_sender_session(m, message, true, error, ret);
 148
 149         session = hashmap_get(m->sessions, name);
 150         if (!session)
 151                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 152
 153         *ret = session;
 154         return 0;
 155 }
 156
 157 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 158         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 159         uid_t uid;
 160         User *user;
 161         int r;
 162
 163         /* Note that we get the owner UID of the session, not the actual client UID here! */
 164         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 165         if (r < 0)
 166                 return r;
 167
 168         r = sd_bus_creds_get_owner_uid(creds, &uid);
 169         if (r < 0) {
 170                 if (r != -ENXIO)
 171                         return r;
 172
 173                 user = NULL;
 174         } else
 175                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 176
 177         if (!user)
 178                 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 179                                          "Caller does not belong to any logged in or lingering user");
 180
 181         *ret = user;
 182         return 0;
 183 }
 184
 185 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 186         User *user;
 187
 188         assert(m);
 189         assert(ret);
 190
 191         if (!uid_is_valid(uid))
 192                 return get_sender_user(m, message, error, ret);
 193
 194         user = hashmap_get(m->users, UID_TO_PTR(uid));
 195         if (!user)
 196                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
 197                                          "User ID "UID_FMT" is not logged in or lingering", uid);
 198
 199         *ret = user;
 200         return 0;
 201 }
 202
 203 int manager_get_seat_from_creds(
 204                 Manager *m,
 205                 sd_bus_message *message,
 206                 const char *name,
 207                 sd_bus_error *error,
 208                 Seat **ret) {
 209
 210         Seat *seat;
 211         int r;
 212
 213         assert(m);
 214         assert(ret);
 215
 216         if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
 217                 Session *session;
 218
 219                 /* Use these special seat names as session names */
 220                 r = manager_get_session_from_creds(m, message, name, error, &session);
 221                 if (r < 0)
 222                         return r;
 223
 224                 seat = session->seat;
 225                 if (!seat)
 226                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
 227         } else {
 228                 seat = hashmap_get(m->seats, name);
 229                 if (!seat)
 230                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 231         }
 232
 233         *ret = seat;
 234         return 0;
 235 }
 236
 237 static int return_test_polkit(
 238                 sd_bus_message *message,
 239                 const char *action,
 240                 const char **details,
 241                 uid_t good_user,
 242                 sd_bus_error *e) {
 243
 244         const char *result;
 245         bool challenge;
 246         int r;
 247
 248         r = bus_test_polkit(message, action, details, good_user, &challenge, e);
 249         if (r < 0)
 250                 return r;
 251
 252         if (r > 0)
 253                 result = "yes";
 254         else if (challenge)
 255                 result = "challenge";
 256         else
 257                 result = "no";
 258
 259         return sd_bus_reply_method_return(message, "s", result);
 260 }
 261
 262 static int property_get_idle_hint(
 263                 sd_bus *bus,
 264                 const char *path,
 265                 const char *interface,
 266                 const char *property,
 267                 sd_bus_message *reply,
 268                 void *userdata,
 269                 sd_bus_error *error) {
 270
 271         Manager *m = ASSERT_PTR(userdata);
 272
 273         assert(bus);
 274         assert(reply);
 275
 276         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 277 }
 278
 279 static int property_get_idle_since_hint(
 280                 sd_bus *bus,
 281                 const char *path,
 282                 const char *interface,
 283                 const char *property,
 284                 sd_bus_message *reply,
 285                 void *userdata,
 286                 sd_bus_error *error) {
 287
 288         Manager *m = ASSERT_PTR(userdata);
 289         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 290
 291         assert(bus);
 292         assert(reply);
 293
 294         manager_get_idle_hint(m, &t);
 295
 296         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 297 }
 298
 299 static int property_get_inhibited(
 300                 sd_bus *bus,
 301                 const char *path,
 302                 const char *interface,
 303                 const char *property,
 304                 sd_bus_message *reply,
 305                 void *userdata,
 306                 sd_bus_error *error) {
 307
 308         Manager *m = ASSERT_PTR(userdata);
 309         InhibitWhat w;
 310
 311         assert(bus);
 312         assert(reply);
 313
 314         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 315
 316         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 317 }
 318
 319 static int property_get_preparing(
 320                 sd_bus *bus,
 321                 const char *path,
 322                 const char *interface,
 323                 const char *property,
 324                 sd_bus_message *reply,
 325                 void *userdata,
 326                 sd_bus_error *error) {
 327
 328         Manager *m = ASSERT_PTR(userdata);
 329         bool b = false;
 330
 331         assert(bus);
 332         assert(reply);
 333
 334         if (m->delayed_action) {
 335                 if (streq(property, "PreparingForShutdown"))
 336                         b = m->delayed_action->inhibit_what & INHIBIT_SHUTDOWN;
 337                 else
 338                         b = m->delayed_action->inhibit_what & INHIBIT_SLEEP;
 339         }
 340
 341         return sd_bus_message_append(reply, "b", b);
 342 }
 343
 344 static int property_get_sleep_operations(
 345                 sd_bus *bus,
 346                 const char *path,
 347                 const char *interface,
 348                 const char *property,
 349                 sd_bus_message *reply,
 350                 void *userdata,
 351                 sd_bus_error *error) {
 352
 353         Manager *m = ASSERT_PTR(userdata);
 354         _cleanup_strv_free_ char **actions = NULL;
 355         int r;
 356
 357         assert(bus);
 358         assert(reply);
 359
 360         r = handle_action_get_enabled_sleep_actions(m->handle_action_sleep_mask, &actions);
 361         if (r < 0)
 362                 return r;
 363
 364         return sd_bus_message_append_strv(reply, actions);
 365 }
 366
 367 static int property_get_scheduled_shutdown(
 368                 sd_bus *bus,
 369                 const char *path,
 370                 const char *interface,
 371                 const char *property,
 372                 sd_bus_message *reply,
 373                 void *userdata,
 374                 sd_bus_error *error) {
 375
 376         Manager *m = ASSERT_PTR(userdata);
 377         int r;
 378
 379         assert(bus);
 380         assert(reply);
 381
 382         r = sd_bus_message_open_container(reply, 'r', "st");
 383         if (r < 0)
 384                 return r;
 385
 386         r = sd_bus_message_append(
 387                         reply, "st",
 388                         handle_action_to_string(m->scheduled_shutdown_action),
 389                         m->scheduled_shutdown_timeout);
 390         if (r < 0)
 391                 return r;
 392
 393         return sd_bus_message_close_container(reply);
 394 }
 395
 396 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 397 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 398 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 399 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power());
 400 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 401 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 402
 403 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 404         _cleanup_free_ char *p = NULL;
 405         Manager *m = ASSERT_PTR(userdata);
 406         const char *name;
 407         Session *session;
 408         int r;
 409
 410         assert(message);
 411
 412         r = sd_bus_message_read(message, "s", &name);
 413         if (r < 0)
 414                 return r;
 415
 416         r = manager_get_session_from_creds(m, message, name, error, &session);
 417         if (r < 0)
 418                 return r;
 419
 420         p = session_bus_path(session);
 421         if (!p)
 422                 return -ENOMEM;
 423
 424         return sd_bus_reply_method_return(message, "o", p);
 425 }
 426
 427 /* Get login session of a process.  This is not what you are looking for these days,
 428  * as apps may instead belong to a user service unit.  This includes terminal
 429  * emulators and hence command-line apps. */
 430 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 431         Manager *m = ASSERT_PTR(userdata);
 432         _cleanup_free_ char *p = NULL;
 433         Session *session = NULL;
 434         pid_t pid;
 435         int r;
 436
 437         assert(message);
 438
 439         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 440
 441         r = sd_bus_message_read(message, "u", &pid);
 442         if (r < 0)
 443                 return r;
 444         if (pid < 0)
 445                 return -EINVAL;
 446
 447         if (pid == 0) {
 448                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 449                 if (r < 0)
 450                         return r;
 451         } else {
 452                 r = manager_get_session_by_pidref(m, &PIDREF_MAKE_FROM_PID(pid), &session);
 453                 if (r < 0)
 454                         return r;
 455
 456                 if (!session)
 457                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 458                                                  "PID "PID_FMT" does not belong to any known session", pid);
 459         }
 460
 461         p = session_bus_path(session);
 462         if (!p)
 463                 return -ENOMEM;
 464
 465         return sd_bus_reply_method_return(message, "o", p);
 466 }
 467
 468 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 469         _cleanup_free_ char *p = NULL;
 470         Manager *m = ASSERT_PTR(userdata);
 471         uint32_t uid;
 472         User *user;
 473         int r;
 474
 475         assert(message);
 476
 477         r = sd_bus_message_read(message, "u", &uid);
 478         if (r < 0)
 479                 return r;
 480
 481         r = manager_get_user_from_creds(m, message, uid, error, &user);
 482         if (r < 0)
 483                 return r;
 484
 485         p = user_bus_path(user);
 486         if (!p)
 487                 return -ENOMEM;
 488
 489         return sd_bus_reply_method_return(message, "o", p);
 490 }
 491
 492 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 493         _cleanup_free_ char *p = NULL;
 494         Manager *m = ASSERT_PTR(userdata);
 495         User *user = NULL;
 496         pid_t pid;
 497         int r;
 498
 499         assert(message);
 500
 501         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 502
 503         r = sd_bus_message_read(message, "u", &pid);
 504         if (r < 0)
 505                 return r;
 506         if (pid < 0)
 507                 return -EINVAL;
 508
 509         if (pid == 0) {
 510                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 511                 if (r < 0)
 512                         return r;
 513         } else {
 514                 r = manager_get_user_by_pid(m, pid, &user);
 515                 if (r < 0)
 516                         return r;
 517                 if (!user)
 518                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 519                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 520                                                  pid);
 521         }
 522
 523         p = user_bus_path(user);
 524         if (!p)
 525                 return -ENOMEM;
 526
 527         return sd_bus_reply_method_return(message, "o", p);
 528 }
 529
 530 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 531         _cleanup_free_ char *p = NULL;
 532         Manager *m = ASSERT_PTR(userdata);
 533         const char *name;
 534         Seat *seat;
 535         int r;
 536
 537         assert(message);
 538
 539         r = sd_bus_message_read(message, "s", &name);
 540         if (r < 0)
 541                 return r;
 542
 543         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 544         if (r < 0)
 545                 return r;
 546
 547         p = seat_bus_path(seat);
 548         if (!p)
 549                 return -ENOMEM;
 550
 551         return sd_bus_reply_method_return(message, "o", p);
 552 }
 553
 554 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 555         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 556         Manager *m = ASSERT_PTR(userdata);
 557         Session *session;
 558         int r;
 559
 560         assert(message);
 561
 562         r = sd_bus_message_new_method_return(message, &reply);
 563         if (r < 0)
 564                 return r;
 565
 566         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 567         if (r < 0)
 568                 return r;
 569
 570         HASHMAP_FOREACH(session, m->sessions) {
 571                 _cleanup_free_ char *p = NULL;
 572
 573                 p = session_bus_path(session);
 574                 if (!p)
 575                         return -ENOMEM;
 576
 577                 r = sd_bus_message_append(reply, "(susso)",
 578                                           session->id,
 579                                           (uint32_t) session->user->user_record->uid,
 580                                           session->user->user_record->user_name,
 581                                           session->seat ? session->seat->id : "",
 582                                           p);
 583                 if (r < 0)
 584                         return r;
 585         }
 586
 587         r = sd_bus_message_close_container(reply);
 588         if (r < 0)
 589                 return r;
 590
 591         return sd_bus_send(NULL, reply, NULL);
 592 }
 593
 594 static int method_list_sessions_ex(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 595         Manager *m = ASSERT_PTR(userdata);
 596         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 597         int r;
 598
 599         assert(message);
 600
 601         r = sd_bus_message_new_method_return(message, &reply);
 602         if (r < 0)
 603                 return r;
 604
 605         r = sd_bus_message_open_container(reply, 'a', "(sussussbto)");
 606         if (r < 0)
 607                 return r;
 608
 609         Session *s;
 610         HASHMAP_FOREACH(s, m->sessions) {
 611                 _cleanup_free_ char *path = NULL;
 612                 dual_timestamp idle_ts;
 613                 bool idle;
 614
 615                 assert(s->user);
 616
 617                 path = session_bus_path(s);
 618                 if (!path)
 619                         return -ENOMEM;
 620
 621                 r = session_get_idle_hint(s, &idle_ts);
 622                 if (r < 0)
 623                         return r;
 624                 idle = r > 0;
 625
 626                 r = sd_bus_message_append(reply, "(sussussbto)",
 627                                           s->id,
 628                                           (uint32_t) s->user->user_record->uid,
 629                                           s->user->user_record->user_name,
 630                                           s->seat ? s->seat->id : "",
 631                                           (uint32_t) s->leader.pid,
 632                                           session_class_to_string(s->class),
 633                                           s->tty,
 634                                           idle,
 635                                           idle_ts.monotonic,
 636                                           path);
 637                 if (r < 0)
 638                         return r;
 639         }
 640
 641         r = sd_bus_message_close_container(reply);
 642         if (r < 0)
 643                 return r;
 644
 645         return sd_bus_send(NULL, reply, NULL);
 646 }
 647
 648 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 649         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 650         Manager *m = ASSERT_PTR(userdata);
 651         User *user;
 652         int r;
 653
 654         assert(message);
 655
 656         r = sd_bus_message_new_method_return(message, &reply);
 657         if (r < 0)
 658                 return r;
 659
 660         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 661         if (r < 0)
 662                 return r;
 663
 664         HASHMAP_FOREACH(user, m->users) {
 665                 _cleanup_free_ char *p = NULL;
 666
 667                 p = user_bus_path(user);
 668                 if (!p)
 669                         return -ENOMEM;
 670
 671                 r = sd_bus_message_append(reply, "(uso)",
 672                                           (uint32_t) user->user_record->uid,
 673                                           user->user_record->user_name,
 674                                           p);
 675                 if (r < 0)
 676                         return r;
 677         }
 678
 679         r = sd_bus_message_close_container(reply);
 680         if (r < 0)
 681                 return r;
 682
 683         return sd_bus_send(NULL, reply, NULL);
 684 }
 685
 686 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 687         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 688         Manager *m = ASSERT_PTR(userdata);
 689         Seat *seat;
 690         int r;
 691
 692         assert(message);
 693
 694         r = sd_bus_message_new_method_return(message, &reply);
 695         if (r < 0)
 696                 return r;
 697
 698         r = sd_bus_message_open_container(reply, 'a', "(so)");
 699         if (r < 0)
 700                 return r;
 701
 702         HASHMAP_FOREACH(seat, m->seats) {
 703                 _cleanup_free_ char *p = NULL;
 704
 705                 p = seat_bus_path(seat);
 706                 if (!p)
 707                         return -ENOMEM;
 708
 709                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 710                 if (r < 0)
 711                         return r;
 712         }
 713
 714         r = sd_bus_message_close_container(reply);
 715         if (r < 0)
 716                 return r;
 717
 718         return sd_bus_send(NULL, reply, NULL);
 719 }
 720
 721 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 722         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 723         Manager *m = ASSERT_PTR(userdata);
 724         Inhibitor *inhibitor;
 725         int r;
 726
 727         assert(message);
 728
 729         r = sd_bus_message_new_method_return(message, &reply);
 730         if (r < 0)
 731                 return r;
 732
 733         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 734         if (r < 0)
 735                 return r;
 736
 737         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 738
 739                 r = sd_bus_message_append(reply, "(ssssuu)",
 740                                           strempty(inhibit_what_to_string(inhibitor->what)),
 741                                           strempty(inhibitor->who),
 742                                           strempty(inhibitor->why),
 743                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 744                                           (uint32_t) inhibitor->uid,
 745                                           (uint32_t) inhibitor->pid.pid);
 746                 if (r < 0)
 747                         return r;
 748         }
 749
 750         r = sd_bus_message_close_container(reply);
 751         if (r < 0)
 752                 return r;
 753
 754         return sd_bus_send(NULL, reply, NULL);
 755 }
 756
 757 static int create_session(
 758                 sd_bus_message *message,
 759                 void *userdata,
 760                 sd_bus_error *error,
 761                 uid_t uid,
 762                 pid_t pid,
 763                 int pidfd,
 764                 const char *service,
 765                 const char *type,
 766                 const char *class,
 767                 const char *desktop,
 768                 const char *cseat,
 769                 uint32_t vtnr,
 770                 const char *tty,
 771                 const char *display,
 772                 int remote,
 773                 const char *remote_user,
 774                 const char *remote_host,
 775                 uint64_t flags) {
 776
 777         _cleanup_(pidref_done) PidRef leader = PIDREF_NULL;
 778         Manager *m = ASSERT_PTR(userdata);
 779         _cleanup_free_ char *id = NULL;
 780         Session *session = NULL;
 781         uint32_t audit_id = 0;
 782         User *user = NULL;
 783         Seat *seat = NULL;
 784         SessionType t;
 785         SessionClass c;
 786         int r;
 787
 788         assert(message);
 789
 790         if (!uid_is_valid(uid))
 791                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 792
 793         if (flags != 0)
 794                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Flags must be zero.");
 795
 796         if (pidfd >= 0) {
 797                 r = pidref_set_pidfd(&leader, pidfd);
 798                 if (r < 0)
 799                         return r;
 800         } else if (pid == 0) {
 801                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 802                 pid_t p;
 803
 804                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 805                 if (r < 0)
 806                         return r;
 807
 808                 r = sd_bus_creds_get_pid(creds, &p);
 809                 if (r < 0)
 810                         return r;
 811
 812                 r = pidref_set_pid(&leader, p);
 813                 if (r < 0)
 814                         return r;
 815         } else {
 816                 assert(pid > 0);
 817
 818                 r = pidref_set_pid(&leader, pid);
 819                 if (r < 0)
 820                         return r;
 821         }
 822
 823         if (leader.pid == 1 || leader.pid == getpid_cached())
 824                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 825
 826         if (isempty(type))
 827                 t = _SESSION_TYPE_INVALID;
 828         else {
 829                 t = session_type_from_string(type);
 830                 if (t < 0)
 831                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 832                                                  "Invalid session type %s", type);
 833         }
 834
 835         if (isempty(class))
 836                 c = _SESSION_CLASS_INVALID;
 837         else {
 838                 c = session_class_from_string(class);
 839                 if (c < 0)
 840                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 841                                                  "Invalid session class %s", class);
 842         }
 843
 844         if (isempty(desktop))
 845                 desktop = NULL;
 846         else {
 847                 if (!string_is_safe(desktop))
 848                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 849                                                  "Invalid desktop string %s", desktop);
 850         }
 851
 852         if (isempty(cseat))
 853                 seat = NULL;
 854         else {
 855                 seat = hashmap_get(m->seats, cseat);
 856                 if (!seat)
 857                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 858                                                  "No seat '%s' known", cseat);
 859         }
 860
 861         if (tty_is_vc(tty)) {
 862                 int v;
 863
 864                 if (!seat)
 865                         seat = m->seat0;
 866                 else if (seat != m->seat0)
 867                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 868                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 869
 870                 v = vtnr_from_tty(tty);
 871                 if (v <= 0)
 872                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 873                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 874
 875                 if (vtnr == 0)
 876                         vtnr = (uint32_t) v;
 877                 else if (vtnr != (uint32_t) v)
 878                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 879                                                  "Specified TTY and VT number do not match");
 880
 881         } else if (tty_is_console(tty)) {
 882
 883                 if (!seat)
 884                         seat = m->seat0;
 885                 else if (seat != m->seat0)
 886                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 887                                                  "Console TTY specified but seat is not seat0");
 888
 889                 if (vtnr != 0)
 890                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 891                                                  "Console TTY specified but VT number is not 0");
 892         }
 893
 894         if (seat) {
 895                 if (seat_has_vts(seat)) {
 896                         if (vtnr <= 0 || vtnr > 63)
 897                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 898                                                          "VT number out of range");
 899                 } else {
 900                         if (vtnr != 0)
 901                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 902                                                          "Seat has no VTs but VT number not 0");
 903                 }
 904         }
 905
 906         if (t == _SESSION_TYPE_INVALID) {
 907                 if (!isempty(display))
 908                         t = SESSION_X11;
 909                 else if (!isempty(tty))
 910                         t = SESSION_TTY;
 911                 else
 912                         t = SESSION_UNSPECIFIED;
 913         }
 914
 915         if (c == _SESSION_CLASS_INVALID) {
 916                 if (t == SESSION_UNSPECIFIED)
 917                         c = SESSION_BACKGROUND;
 918                 else
 919                         c = SESSION_USER;
 920         }
 921
 922         /* Check if we are already in a logind session, and if so refuse. */
 923         r = manager_get_session_by_pidref(m, &leader, /* ret_session= */ NULL);
 924         if (r < 0)
 925                 return r;
 926         if (r > 0)
 927                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 928                                          "Already running in a session or user slice");
 929
 930         /* Old gdm and lightdm start the user-session on the same VT as the greeter session. But they destroy
 931          * the greeter session after the user-session and want the user-session to take over the VT. We need
 932          * to support this for backwards-compatibility, so make sure we allow new sessions on a VT that a
 933          * greeter is running on. Furthermore, to allow re-logins, we have to allow a greeter to take over a
 934          * used VT for the exact same reasons. */
 935         if (c != SESSION_GREETER &&
 936             vtnr > 0 &&
 937             vtnr < MALLOC_ELEMENTSOF(m->seat0->positions) &&
 938             m->seat0->positions[vtnr] &&
 939             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 940                 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 941
 942         if (hashmap_size(m->sessions) >= m->sessions_max)
 943                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 944                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 945                                          m->sessions_max);
 946
 947         (void) audit_session_from_pid(leader.pid, &audit_id);
 948         if (audit_session_is_valid(audit_id)) {
 949                 /* Keep our session IDs and the audit session IDs in sync */
 950
 951                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 952                         return -ENOMEM;
 953
 954                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 955                  * not trust the audit data and let's better register a new ID */
 956                 if (hashmap_contains(m->sessions, id)) {
 957                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 958                         audit_id = AUDIT_SESSION_INVALID;
 959                         id = mfree(id);
 960                 }
 961         }
 962
 963         if (!id) {
 964                 do {
 965                         id = mfree(id);
 966
 967                         if (asprintf(&id, "c%" PRIu64, ++m->session_counter) < 0)
 968                                 return -ENOMEM;
 969
 970                 } while (hashmap_contains(m->sessions, id));
 971         }
 972
 973         /* The generated names should not clash with 'auto' or 'self' */
 974         assert(!SESSION_IS_SELF(id));
 975         assert(!SESSION_IS_AUTO(id));
 976
 977         /* If we are not watching utmp already, try again */
 978         manager_reconnect_utmp(m);
 979
 980         r = manager_add_user_by_uid(m, uid, &user);
 981         if (r < 0)
 982                 goto fail;
 983
 984         r = manager_add_session(m, id, &session);
 985         if (r < 0)
 986                 goto fail;
 987
 988         session_set_user(session, user);
 989         r = session_set_leader_consume(session, TAKE_PIDREF(leader));
 990         if (r < 0)
 991                 goto fail;
 992
 993         session->original_type = session->type = t;
 994         session->remote = remote;
 995         session->vtnr = vtnr;
 996         session->class = c;
 997
 998         /* Once the first session that is of a pinning class shows up we'll change the GC mode for the user
 999          * from USER_GC_BY_ANY to USER_GC_BY_PIN, so that the user goes away once the last pinning session
1000          * goes away. Background: we want that user@.service – when started manually – remains around (which
1001          * itself is a non-pinning session), but gets stopped when the last pinning session goes away. */
1002
1003         if (SESSION_CLASS_PIN_USER(c))
1004                 user->gc_mode = USER_GC_BY_PIN;
1005
1006         if (!isempty(tty)) {
1007                 session->tty = strdup(tty);
1008                 if (!session->tty) {
1009                         r = -ENOMEM;
1010                         goto fail;
1011                 }
1012
1013                 session->tty_validity = TTY_FROM_PAM;
1014         }
1015
1016         if (!isempty(display)) {
1017                 session->display = strdup(display);
1018                 if (!session->display) {
1019                         r = -ENOMEM;
1020                         goto fail;
1021                 }
1022         }
1023
1024         if (!isempty(remote_user)) {
1025                 session->remote_user = strdup(remote_user);
1026                 if (!session->remote_user) {
1027                         r = -ENOMEM;
1028                         goto fail;
1029                 }
1030         }
1031
1032         if (!isempty(remote_host)) {
1033                 session->remote_host = strdup(remote_host);
1034                 if (!session->remote_host) {
1035                         r = -ENOMEM;
1036                         goto fail;
1037                 }
1038         }
1039
1040         if (!isempty(service)) {
1041                 session->service = strdup(service);
1042                 if (!session->service) {
1043                         r = -ENOMEM;
1044                         goto fail;
1045                 }
1046         }
1047
1048         if (!isempty(desktop)) {
1049                 session->desktop = strdup(desktop);
1050                 if (!session->desktop) {
1051                         r = -ENOMEM;
1052                         goto fail;
1053                 }
1054         }
1055
1056         if (seat) {
1057                 r = seat_attach_session(seat, session);
1058                 if (r < 0)
1059                         goto fail;
1060         }
1061
1062         r = sd_bus_message_enter_container(message, 'a', "(sv)");
1063         if (r < 0)
1064                 goto fail;
1065
1066         r = session_start(session, message, error);
1067         if (r < 0)
1068                 goto fail;
1069
1070         r = sd_bus_message_exit_container(message);
1071         if (r < 0)
1072                 goto fail;
1073
1074         session->create_message = sd_bus_message_ref(message);
1075
1076         /* Now call into session_send_create_reply(), which will reply to this method call for us. Or it
1077          * won't – in case we just spawned a session scope and/or user service manager, and they aren't ready
1078          * yet. We'll call session_create_reply() again once the session scope or the user service manager is
1079          * ready, where the function will check again if a reply is then ready to be sent, and then do so if
1080          * all is complete - or wait again. */
1081         r = session_send_create_reply(session, /* error= */ NULL);
1082         if (r < 0)
1083                 return r;
1084
1085         return 1;
1086
1087 fail:
1088         if (session)
1089                 session_add_to_gc_queue(session);
1090
1091         if (user)
1092                 user_add_to_gc_queue(user);
1093
1094         return r;
1095 }
1096
1097 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1098         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1099         pid_t leader;
1100         uid_t uid;
1101         int remote;
1102         uint32_t vtnr = 0;
1103         int r;
1104
1105         assert(message);
1106
1107         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
1108         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1109
1110         r = sd_bus_message_read(message,
1111                                 "uusssssussbss",
1112                                 &uid,
1113                                 &leader,
1114                                 &service,
1115                                 &type,
1116                                 &class,
1117                                 &desktop,
1118                                 &cseat,
1119                                 &vtnr,
1120                                 &tty,
1121                                 &display,
1122                                 &remote,
1123                                 &remote_user,
1124                                 &remote_host);
1125         if (r < 0)
1126                 return r;
1127
1128         return create_session(
1129                         message,
1130                         userdata,
1131                         error,
1132                         uid,
1133                         leader,
1134                         /* pidfd = */ -EBADF,
1135                         service,
1136                         type,
1137                         class,
1138                         desktop,
1139                         cseat,
1140                         vtnr,
1141                         tty,
1142                         display,
1143                         remote,
1144                         remote_user,
1145                         remote_host,
1146                         /* flags = */ 0);
1147 }
1148
1149 static int method_create_session_pidfd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1150         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1151         int leaderfd = -EBADF;
1152         uid_t uid;
1153         int remote;
1154         uint32_t vtnr = 0;
1155         uint64_t flags;
1156         int r;
1157
1158         r = sd_bus_message_read(message,
1159                                 "uhsssssussbsst",
1160                                 &uid,
1161                                 &leaderfd,
1162                                 &service,
1163                                 &type,
1164                                 &class,
1165                                 &desktop,
1166                                 &cseat,
1167                                 &vtnr,
1168                                 &tty,
1169                                 &display,
1170                                 &remote,
1171                                 &remote_user,
1172                                 &remote_host,
1173                                 &flags);
1174         if (r < 0)
1175                 return r;
1176
1177         return create_session(
1178                         message,
1179                         userdata,
1180                         error,
1181                         uid,
1182                         /* pid = */ 0,
1183                         leaderfd,
1184                         service,
1185                         type,
1186                         class,
1187                         desktop,
1188                         cseat,
1189                         vtnr,
1190                         tty,
1191                         display,
1192                         remote,
1193                         remote_user,
1194                         remote_host,
1195                         flags);
1196 }
1197
1198 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1199         Manager *m = ASSERT_PTR(userdata);
1200         Session *session;
1201         const char *name;
1202         int r;
1203
1204         assert(message);
1205
1206         r = sd_bus_message_read(message, "s", &name);
1207         if (r < 0)
1208                 return r;
1209
1210         r = manager_get_session_from_creds(m, message, name, error, &session);
1211         if (r < 0)
1212                 return r;
1213
1214         r = session_release(session);
1215         if (r < 0)
1216                 return r;
1217
1218         return sd_bus_reply_method_return(message, NULL);
1219 }
1220
1221 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1222         Manager *m = ASSERT_PTR(userdata);
1223         Session *session;
1224         const char *name;
1225         int r;
1226
1227         assert(message);
1228
1229         r = sd_bus_message_read(message, "s", &name);
1230         if (r < 0)
1231                 return r;
1232
1233         r = manager_get_session_from_creds(m, message, name, error, &session);
1234         if (r < 0)
1235                 return r;
1236
1237         /* PolicyKit is done by bus_session_method_activate() */
1238
1239         return bus_session_method_activate(message, session, error);
1240 }
1241
1242 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1243         const char *session_name, *seat_name;
1244         Manager *m = ASSERT_PTR(userdata);
1245         Session *session;
1246         Seat *seat;
1247         int r;
1248
1249         assert(message);
1250
1251         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1252
1253         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1254         if (r < 0)
1255                 return r;
1256
1257         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1258         if (r < 0)
1259                 return r;
1260
1261         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1262         if (r < 0)
1263                 return r;
1264
1265         if (session->seat != seat)
1266                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1267                                          "Session %s not on seat %s", session_name, seat_name);
1268
1269         r = check_polkit_chvt(message, m, error);
1270         if (r < 0)
1271                 return r;
1272         if (r == 0)
1273                 return 1; /* Will call us back */
1274
1275         r = session_activate(session);
1276         if (r < 0)
1277                 return r;
1278
1279         return sd_bus_reply_method_return(message, NULL);
1280 }
1281
1282 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1283         Manager *m = ASSERT_PTR(userdata);
1284         Session *session;
1285         const char *name;
1286         int r;
1287
1288         assert(message);
1289
1290         r = sd_bus_message_read(message, "s", &name);
1291         if (r < 0)
1292                 return r;
1293
1294         r = manager_get_session_from_creds(m, message, name, error, &session);
1295         if (r < 0)
1296                 return r;
1297
1298         return bus_session_method_lock(message, session, error);
1299 }
1300
1301 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1302         Manager *m = ASSERT_PTR(userdata);
1303         int r;
1304
1305         assert(message);
1306
1307         r = bus_verify_polkit_async(
1308                         message,
1309                         "org.freedesktop.login1.lock-sessions",
1310                         /* details= */ NULL,
1311                         &m->polkit_registry,
1312                         error);
1313         if (r < 0)
1314                 return r;
1315         if (r == 0)
1316                 return 1; /* Will call us back */
1317
1318         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1319         if (r < 0)
1320                 return r;
1321
1322         return sd_bus_reply_method_return(message, NULL);
1323 }
1324
1325 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1326         const char *name;
1327         Manager *m = ASSERT_PTR(userdata);
1328         Session *session;
1329         int r;
1330
1331         assert(message);
1332
1333         r = sd_bus_message_read(message, "s", &name);
1334         if (r < 0)
1335                 return r;
1336
1337         r = manager_get_session_from_creds(m, message, name, error, &session);
1338         if (r < 0)
1339                 return r;
1340
1341         return bus_session_method_kill(message, session, error);
1342 }
1343
1344 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1345         Manager *m = ASSERT_PTR(userdata);
1346         uint32_t uid;
1347         User *user;
1348         int r;
1349
1350         assert(message);
1351
1352         r = sd_bus_message_read(message, "u", &uid);
1353         if (r < 0)
1354                 return r;
1355
1356         r = manager_get_user_from_creds(m, message, uid, error, &user);
1357         if (r < 0)
1358                 return r;
1359
1360         return bus_user_method_kill(message, user, error);
1361 }
1362
1363 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1364         Manager *m = ASSERT_PTR(userdata);
1365         const char *name;
1366         Session *session;
1367         int r;
1368
1369         assert(message);
1370
1371         r = sd_bus_message_read(message, "s", &name);
1372         if (r < 0)
1373                 return r;
1374
1375         r = manager_get_session_from_creds(m, message, name, error, &session);
1376         if (r < 0)
1377                 return r;
1378
1379         return bus_session_method_terminate(message, session, error);
1380 }
1381
1382 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1383         Manager *m = ASSERT_PTR(userdata);
1384         uint32_t uid;
1385         User *user;
1386         int r;
1387
1388         assert(message);
1389
1390         r = sd_bus_message_read(message, "u", &uid);
1391         if (r < 0)
1392                 return r;
1393
1394         r = manager_get_user_from_creds(m, message, uid, error, &user);
1395         if (r < 0)
1396                 return r;
1397
1398         return bus_user_method_terminate(message, user, error);
1399 }
1400
1401 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1402         Manager *m = ASSERT_PTR(userdata);
1403         const char *name;
1404         Seat *seat;
1405         int r;
1406
1407         assert(message);
1408
1409         r = sd_bus_message_read(message, "s", &name);
1410         if (r < 0)
1411                 return r;
1412
1413         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1414         if (r < 0)
1415                 return r;
1416
1417         return bus_seat_method_terminate(message, seat, error);
1418 }
1419
1420 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1421         Manager *m = ASSERT_PTR(userdata);
1422         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1423         uint32_t uid, auth_uid;
1424         int r, enable, interactive;
1425
1426         assert(message);
1427
1428         r = sd_bus_message_read(message, "ubb", &uid, &enable, &interactive);
1429         if (r < 0)
1430                 return r;
1431
1432         r = sd_bus_query_sender_creds(message,
1433                                       SD_BUS_CREDS_EUID|SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT,
1434                                       &creds);
1435         if (r < 0)
1436                 return r;
1437
1438         if (!uid_is_valid(uid)) {
1439                 /* Note that we get the owner UID of the session or user unit, not the actual client UID here! */
1440                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1441                 if (r < 0)
1442                         return r;
1443         }
1444
1445         /* owner_uid is racy, so for authorization we must use euid */
1446         r = sd_bus_creds_get_euid(creds, &auth_uid);
1447         if (r < 0)
1448                 return r;
1449
1450         _cleanup_free_ struct passwd *pw = NULL;
1451
1452         r = getpwuid_malloc(uid, &pw);
1453         if (r < 0)
1454                 return r;
1455
1456         r = bus_verify_polkit_async_full(
1457                         message,
1458                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1459                                           "org.freedesktop.login1.set-user-linger",
1460                         /* details= */ NULL,
1461                         interactive,
1462                         /* good_user= */ UID_INVALID,
1463                         &m->polkit_registry,
1464                         error);
1465         if (r < 0)
1466                 return r;
1467         if (r == 0)
1468                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1469
1470         (void) mkdir_p_label("/var/lib/systemd", 0755);
1471         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1472         if (r < 0)
1473                 return r;
1474
1475         _cleanup_free_ char *escaped = NULL;
1476         const char *path;
1477         User *u;
1478
1479         escaped = cescape(pw->pw_name);
1480         if (!escaped)
1481                 return -ENOMEM;
1482
1483         path = strjoina("/var/lib/systemd/linger/", escaped);
1484
1485         if (enable) {
1486                 r = touch(path);
1487                 if (r < 0)
1488                         return r;
1489
1490                 if (manager_add_user_by_uid(m, uid, &u) >= 0) {
1491                         r = user_start(u);
1492                         if (r < 0) {
1493                                 user_add_to_gc_queue(u);
1494                                 return r;
1495                         }
1496                 }
1497
1498         } else {
1499                 r = unlink(path);
1500                 if (r < 0 && errno != ENOENT)
1501                         return -errno;
1502
1503                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1504                 if (u)
1505                         user_add_to_gc_queue(u);
1506         }
1507
1508         return sd_bus_reply_method_return(message, NULL);
1509 }
1510
1511 static int trigger_device(Manager *m, sd_device *parent) {
1512         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1513         int r;
1514
1515         assert(m);
1516
1517         r = sd_device_enumerator_new(&e);
1518         if (r < 0)
1519                 return r;
1520
1521         r = sd_device_enumerator_allow_uninitialized(e);
1522         if (r < 0)
1523                 return r;
1524
1525         if (parent) {
1526                 r = sd_device_enumerator_add_match_parent(e, parent);
1527                 if (r < 0)
1528                         return r;
1529         }
1530
1531         FOREACH_DEVICE(e, d) {
1532                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1533                 if (r < 0)
1534                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1535         }
1536
1537         return 0;
1538 }
1539
1540 static int attach_device(Manager *m, const char *seat, const char *sysfs, sd_bus_error *error) {
1541         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1542         _cleanup_free_ char *rule = NULL, *file = NULL;
1543         const char *id_for_seat;
1544         int r;
1545
1546         assert(m);
1547         assert(seat);
1548         assert(sysfs);
1549
1550         r = sd_device_new_from_syspath(&d, sysfs);
1551         if (r < 0)
1552                 return sd_bus_error_set_errnof(error, r, "Failed to open device '%s': %m", sysfs);
1553
1554         if (sd_device_has_current_tag(d, "seat") <= 0)
1555                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'seat' udev tag.", sysfs);
1556
1557         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1558                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'ID_FOR_SEAT' udev property.", sysfs);
1559
1560         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1561                 return -ENOMEM;
1562
1563         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1564                 return -ENOMEM;
1565
1566         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1567         r = write_string_file_atomic_label(file, rule);
1568         if (r < 0)
1569                 return r;
1570
1571         return trigger_device(m, d);
1572 }
1573
1574 static int flush_devices(Manager *m) {
1575         _cleanup_closedir_ DIR *d = NULL;
1576
1577         assert(m);
1578
1579         d = opendir("/etc/udev/rules.d");
1580         if (!d) {
1581                 if (errno != ENOENT)
1582                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1583         } else
1584                 FOREACH_DIRENT_ALL(de, d, break) {
1585                         if (!dirent_is_file(de))
1586                                 continue;
1587
1588                         if (!startswith(de->d_name, "72-seat-"))
1589                                 continue;
1590
1591                         if (!endswith(de->d_name, ".rules"))
1592                                 continue;
1593
1594                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1595                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1596                 }
1597
1598         return trigger_device(m, NULL);
1599 }
1600
1601 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1602         const char *sysfs, *seat;
1603         Manager *m = ASSERT_PTR(userdata);
1604         int interactive, r;
1605
1606         assert(message);
1607
1608         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1609         if (r < 0)
1610                 return r;
1611
1612         if (!path_is_normalized(sysfs))
1613                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1614         if (!path_startswith(sysfs, "/sys"))
1615                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1616
1617         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1618                 Seat *found;
1619
1620                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1621                 if (r < 0)
1622                         return r;
1623
1624                 seat = found->id;
1625
1626         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1627                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1628
1629         r = bus_verify_polkit_async_full(
1630                         message,
1631                         "org.freedesktop.login1.attach-device",
1632                         /* details= */ NULL,
1633                         interactive,
1634                         /* good_user= */ UID_INVALID,
1635                         &m->polkit_registry,
1636                         error);
1637         if (r < 0)
1638                 return r;
1639         if (r == 0)
1640                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1641
1642         r = attach_device(m, seat, sysfs, error);
1643         if (r < 0)
1644                 return r;
1645
1646         return sd_bus_reply_method_return(message, NULL);
1647 }
1648
1649 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1650         Manager *m = ASSERT_PTR(userdata);
1651         int interactive, r;
1652
1653         assert(message);
1654
1655         r = sd_bus_message_read(message, "b", &interactive);
1656         if (r < 0)
1657                 return r;
1658
1659         r = bus_verify_polkit_async_full(
1660                         message,
1661                         "org.freedesktop.login1.flush-devices",
1662                         /* details= */ NULL,
1663                         interactive,
1664                         /* good_user= */ UID_INVALID,
1665                         &m->polkit_registry,
1666                         error);
1667         if (r < 0)
1668                 return r;
1669         if (r == 0)
1670                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1671
1672         r = flush_devices(m);
1673         if (r < 0)
1674                 return r;
1675
1676         return sd_bus_reply_method_return(message, NULL);
1677 }
1678
1679 static int have_multiple_sessions(
1680                 Manager *m,
1681                 uid_t uid) {
1682
1683         Session *session;
1684
1685         assert(m);
1686
1687         /* Check for other users' sessions. Greeter sessions do not
1688          * count, and non-login sessions do not count either. */
1689         HASHMAP_FOREACH(session, m->sessions)
1690                 if (session->class == SESSION_USER &&
1691                     session->user->user_record->uid != uid)
1692                         return true;
1693
1694         return false;
1695 }
1696
1697 static int bus_manager_log_shutdown(
1698                 Manager *m,
1699                 const HandleActionData *a) {
1700         assert(m);
1701         assert(a);
1702
1703         const char *message = a->message ?: "System is shutting down";
1704         const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1705
1706         return log_struct(LOG_NOTICE,
1707                           "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1708                           LOG_MESSAGE("%s%s%s%s.",
1709                                       message,
1710                                       m->wall_message ? " (" : "",
1711                                       strempty(m->wall_message),
1712                                       m->wall_message ? ")" : ""),
1713                           log_verb);
1714 }
1715
1716 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1717         Manager *m = ASSERT_PTR(userdata);
1718
1719         assert(e);
1720
1721         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1722         return 0;
1723 }
1724
1725 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1726         int r;
1727
1728         assert(m);
1729
1730         if (until <= now(CLOCK_MONOTONIC))
1731                 return 0;
1732
1733         /* We want to ignore the lid switch for a while after each
1734          * suspend, and after boot-up. Hence let's install a timer for
1735          * this. As long as the event source exists we ignore the lid
1736          * switch. */
1737
1738         if (m->lid_switch_ignore_event_source) {
1739                 usec_t u;
1740
1741                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1742                 if (r < 0)
1743                         return r;
1744
1745                 if (until <= u)
1746                         return 0;
1747
1748                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1749         } else
1750                 r = sd_event_add_time(
1751                                 m->event,
1752                                 &m->lid_switch_ignore_event_source,
1753                                 CLOCK_MONOTONIC,
1754                                 until, 0,
1755                                 lid_switch_ignore_handler, m);
1756
1757         return r;
1758 }
1759
1760 static int send_prepare_for(Manager *m, const HandleActionData *a, bool _active) {
1761         int k = 0, r, active = _active;
1762
1763         assert(m);
1764         assert(a);
1765         assert(IN_SET(a->inhibit_what, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1766
1767         /* We need to send both old and new signal for backward compatibility. The newer one allows clients
1768          * to know which type of reboot is going to happen, as they might be doing different actions (e.g.:
1769          * on soft-reboot), and it is sent first, so that clients know that if they receive the old one
1770          * first then they don't have to wait for the new one, as it means it's not supported. So, do not
1771          * change the order here, as it is an API. */
1772         if (a->inhibit_what == INHIBIT_SHUTDOWN) {
1773                 k = sd_bus_emit_signal(m->bus,
1774                                        "/org/freedesktop/login1",
1775                                        "org.freedesktop.login1.Manager",
1776                                        "PrepareForShutdownWithMetadata",
1777                                        "ba{sv}",
1778                                        active,
1779                                        1,
1780                                        "type",
1781                                        "s",
1782                                        handle_action_to_string(a->handle));
1783                 if (k < 0)
1784                         log_debug_errno(k, "Failed to emit PrepareForShutdownWithMetadata(): %m");
1785         }
1786
1787         r = sd_bus_emit_signal(m->bus,
1788                                "/org/freedesktop/login1",
1789                                "org.freedesktop.login1.Manager",
1790                                a->inhibit_what == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1791                                "b",
1792                                active);
1793         if (r < 0)
1794                 log_debug_errno(r, "Failed to emit PrepareForShutdown(): %m");
1795
1796         return RET_GATHER(k, r);
1797 }
1798
1799 static int execute_shutdown_or_sleep(
1800                 Manager *m,
1801                 const HandleActionData *a,
1802                 sd_bus_error *error) {
1803
1804         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1805         const char *p;
1806         int r;
1807
1808         assert(m);
1809         assert(!m->action_job);
1810         assert(a);
1811
1812         if (a->inhibit_what == INHIBIT_SHUTDOWN)
1813                 bus_manager_log_shutdown(m, a);
1814
1815         r = bus_call_method(
1816                         m->bus,
1817                         bus_systemd_mgr,
1818                         "StartUnit",
1819                         error,
1820                         &reply,
1821                         "ss", a->target, "replace-irreversibly");
1822         if (r < 0)
1823                 goto error;
1824
1825         r = sd_bus_message_read(reply, "o", &p);
1826         if (r < 0)
1827                 goto error;
1828
1829         m->action_job = strdup(p);
1830         if (!m->action_job) {
1831                 r = -ENOMEM;
1832                 goto error;
1833         }
1834
1835         m->delayed_action = a;
1836
1837         /* Make sure the lid switch is ignored for a while */
1838         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1839
1840         return 0;
1841
1842 error:
1843         /* Tell people that they now may take a lock again */
1844         (void) send_prepare_for(m, a, false);
1845
1846         return r;
1847 }
1848
1849 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1850         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1851         Inhibitor *offending = NULL;
1852         int r;
1853
1854         assert(manager);
1855
1856         if (!manager->delayed_action || manager->action_job)
1857                 return 0;
1858
1859         if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1860                 _cleanup_free_ char *comm = NULL, *u = NULL;
1861
1862                 if (!timeout)
1863                         return 0;
1864
1865                 (void) pidref_get_comm(&offending->pid, &comm);
1866                 u = uid_to_name(offending->uid);
1867
1868                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1869                            offending->uid, strna(u),
1870                            offending->pid.pid, strna(comm));
1871         }
1872
1873         /* Actually do the operation */
1874         r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1875         if (r < 0) {
1876                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1877                             bus_error_message(&error, r));
1878
1879                 manager->delayed_action = NULL;
1880         }
1881
1882         return 1; /* We did some work. */
1883 }
1884
1885 static int manager_inhibit_timeout_handler(
1886                         sd_event_source *s,
1887                         uint64_t usec,
1888                         void *userdata) {
1889
1890         Manager *manager = ASSERT_PTR(userdata);
1891
1892         assert(manager->inhibit_timeout_source == s);
1893
1894         return manager_dispatch_delayed(manager, true);
1895 }
1896
1897 static int delay_shutdown_or_sleep(
1898                 Manager *m,
1899                 const HandleActionData *a) {
1900
1901         int r;
1902
1903         assert(m);
1904         assert(a);
1905
1906         if (m->inhibit_timeout_source) {
1907                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1908                 if (r < 0)
1909                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1910
1911                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1912                 if (r < 0)
1913                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1914         } else {
1915                 r = sd_event_add_time_relative(
1916                                 m->event,
1917                                 &m->inhibit_timeout_source,
1918                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1919                                 manager_inhibit_timeout_handler, m);
1920                 if (r < 0)
1921                         return r;
1922         }
1923
1924         m->delayed_action = a;
1925
1926         return 0;
1927 }
1928
1929 int bus_manager_shutdown_or_sleep_now_or_later(
1930                 Manager *m,
1931                 const HandleActionData *a,
1932                 sd_bus_error *error) {
1933
1934         _cleanup_free_ char *load_state = NULL;
1935         bool delayed;
1936         int r;
1937
1938         assert(m);
1939         assert(a);
1940         assert(!m->action_job);
1941
1942         r = unit_load_state(m->bus, a->target, &load_state);
1943         if (r < 0)
1944                 return r;
1945
1946         if (!streq(load_state, "loaded"))
1947                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1948                                         "Unit %s is %s, refusing operation.",
1949                                         a->target, load_state);
1950
1951         /* Tell everybody to prepare for shutdown/sleep */
1952         (void) send_prepare_for(m, a, true);
1953
1954         delayed =
1955                 m->inhibit_delay_max > 0 &&
1956                 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1957
1958         if (delayed)
1959                 /* Shutdown is delayed, keep in mind what we
1960                  * want to do, and start a timeout */
1961                 r = delay_shutdown_or_sleep(m, a);
1962         else
1963                 /* Shutdown is not delayed, execute it
1964                  * immediately */
1965                 r = execute_shutdown_or_sleep(m, a, error);
1966
1967         return r;
1968 }
1969
1970 static int verify_shutdown_creds(
1971                 Manager *m,
1972                 sd_bus_message *message,
1973                 const HandleActionData *a,
1974                 uint64_t flags,
1975                 sd_bus_error *error) {
1976
1977         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1978         bool multiple_sessions, blocked, interactive;
1979         uid_t uid;
1980         int r;
1981
1982         assert(m);
1983         assert(a);
1984         assert(message);
1985
1986         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1987         if (r < 0)
1988                 return r;
1989
1990         r = sd_bus_creds_get_euid(creds, &uid);
1991         if (r < 0)
1992                 return r;
1993
1994         r = have_multiple_sessions(m, uid);
1995         if (r < 0)
1996                 return r;
1997
1998         multiple_sessions = r > 0;
1999         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2000         interactive = flags & SD_LOGIND_INTERACTIVE;
2001
2002         if (multiple_sessions) {
2003                 r = bus_verify_polkit_async_full(
2004                                 message,
2005                                 a->polkit_action_multiple_sessions,
2006                                 /* details= */ NULL,
2007                                 interactive,
2008                                 /* good_user= */ UID_INVALID,
2009                                 &m->polkit_registry,
2010                                 error);
2011                 if (r < 0)
2012                         return r;
2013                 if (r == 0)
2014                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2015         }
2016
2017         if (blocked) {
2018                 /* We don't check polkit for root here, because you can't be more privileged than root */
2019                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
2020                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
2021                                                  "Access denied to root due to active block inhibitor");
2022
2023                 r = bus_verify_polkit_async_full(
2024                                 message,
2025                                 a->polkit_action_ignore_inhibit,
2026                                 /* details= */ NULL,
2027                                 interactive,
2028                                 /* good_user= */ UID_INVALID,
2029                                 &m->polkit_registry,
2030                                 error);
2031                 if (r < 0)
2032                         return r;
2033                 if (r == 0)
2034                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2035         }
2036
2037         if (!multiple_sessions && !blocked) {
2038                 r = bus_verify_polkit_async_full(
2039                                 message,
2040                                 a->polkit_action,
2041                                 /* details= */ NULL,
2042                                 interactive,
2043                                 /* good_user= */ UID_INVALID,
2044                                 &m->polkit_registry,
2045                                 error);
2046                 if (r < 0)
2047                         return r;
2048                 if (r == 0)
2049                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2050         }
2051
2052         return 0;
2053 }
2054
2055 static int setup_wall_message_timer(Manager *m, sd_bus_message* message) {
2056         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2057         int r;
2058
2059         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2060         if (r >= 0) {
2061                 const char *tty = NULL;
2062
2063                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2064                 (void) sd_bus_creds_get_tty(creds, &tty);
2065
2066                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2067                 if (r < 0)
2068                         return log_oom();
2069         }
2070
2071         r = manager_setup_wall_message_timer(m);
2072         if (r < 0)
2073                 return r;
2074
2075         return 0;
2076 }
2077
2078 static int method_do_shutdown_or_sleep(
2079                 Manager *m,
2080                 sd_bus_message *message,
2081                 HandleAction action,
2082                 bool with_flags,
2083                 sd_bus_error *error) {
2084
2085         uint64_t flags;
2086         int r;
2087
2088         assert(m);
2089         assert(message);
2090         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2091
2092         if (with_flags) {
2093                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
2094                 r = sd_bus_message_read(message, "t", &flags);
2095                 if (r < 0)
2096                         return r;
2097                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
2098                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2099                                                 "Invalid flags parameter");
2100
2101                 if (FLAGS_SET(flags, (SD_LOGIND_REBOOT_VIA_KEXEC|SD_LOGIND_SOFT_REBOOT)))
2102                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2103                                                 "Both reboot via kexec and soft reboot selected, which is not supported");
2104
2105                 if (action != HANDLE_REBOOT) {
2106                         if (flags & SD_LOGIND_REBOOT_VIA_KEXEC)
2107                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2108                                                         "Reboot via kexec option is only applicable with reboot operations");
2109                         if ((flags & SD_LOGIND_SOFT_REBOOT) || (flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP))
2110                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2111                                                         "Soft reboot option is only applicable with reboot operations");
2112                 }
2113         } else {
2114                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
2115                  * payload. Let's convert this argument to the new-style flags parameter for our internal
2116                  * use. */
2117                 int interactive;
2118
2119                 r = sd_bus_message_read(message, "b", &interactive);
2120                 if (r < 0)
2121                         return r;
2122
2123                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
2124         }
2125
2126         const HandleActionData *a = NULL;
2127
2128         if ((flags & SD_LOGIND_SOFT_REBOOT) ||
2129             ((flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP) && path_is_os_tree("/run/nextroot") > 0))
2130                 a = handle_action_lookup(HANDLE_SOFT_REBOOT);
2131         else if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
2132                 a = handle_action_lookup(HANDLE_KEXEC);
2133
2134         if (action == HANDLE_SLEEP) {
2135                 HandleAction selected;
2136
2137                 selected = handle_action_sleep_select(m);
2138                 if (selected < 0)
2139                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2140                                                 "None of the configured sleep operations are supported");
2141
2142                 assert_se(a = handle_action_lookup(selected));
2143
2144         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2145                 SleepSupport support;
2146
2147                 assert_se(a = handle_action_lookup(action));
2148
2149                 assert(a->sleep_operation >= 0);
2150                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2151
2152                 r = sleep_supported_full(a->sleep_operation, &support);
2153                 if (r < 0)
2154                         return r;
2155                 if (r == 0)
2156                         switch (support) {
2157
2158                         case SLEEP_DISABLED:
2159                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2160                                                          "Sleep verb '%s' is disabled by config",
2161                                                          sleep_operation_to_string(a->sleep_operation));
2162
2163                         case SLEEP_NOT_CONFIGURED:
2164                         case SLEEP_STATE_OR_MODE_NOT_SUPPORTED:
2165                         case SLEEP_ALARM_NOT_SUPPORTED:
2166                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2167                                                          "Sleep verb '%s' is not configured or configuration is not supported by kernel",
2168                                                          sleep_operation_to_string(a->sleep_operation));
2169
2170                         case SLEEP_RESUME_NOT_SUPPORTED:
2171                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2172                                                         "Not running on EFI and resume= is not set. No available method to resume from hibernation");
2173
2174                         case SLEEP_NOT_ENOUGH_SWAP_SPACE:
2175                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2176                                                         "Not enough suitable swap space for hibernation available on compatible block devices and file systems");
2177
2178                         default:
2179                                 assert_not_reached();
2180
2181                         }
2182         } else if (!a)
2183                 assert_se(a = handle_action_lookup(action));
2184
2185         r = verify_shutdown_creds(m, message, a, flags, error);
2186         if (r != 0)
2187                 return r;
2188
2189         if (m->delayed_action)
2190                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
2191                                          "Action %s already in progress, refusing requested %s operation.",
2192                                          handle_action_to_string(m->delayed_action->handle),
2193                                          handle_action_to_string(a->handle));
2194
2195         /* reset case we're shorting a scheduled shutdown */
2196         m->unlink_nologin = false;
2197         reset_scheduled_shutdown(m);
2198
2199         m->scheduled_shutdown_timeout = 0;
2200         m->scheduled_shutdown_action = action;
2201
2202         (void) setup_wall_message_timer(m, message);
2203
2204         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, error);
2205         if (r < 0)
2206                 return r;
2207
2208         return sd_bus_reply_method_return(message, NULL);
2209 }
2210
2211 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2212         Manager *m = userdata;
2213
2214         return method_do_shutdown_or_sleep(
2215                         m, message,
2216                         HANDLE_POWEROFF,
2217                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
2218                         error);
2219 }
2220
2221 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2222         Manager *m = userdata;
2223
2224         return method_do_shutdown_or_sleep(
2225                         m, message,
2226                         HANDLE_REBOOT,
2227                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
2228                         error);
2229 }
2230
2231 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2232         Manager *m = userdata;
2233
2234         return method_do_shutdown_or_sleep(
2235                         m, message,
2236                         HANDLE_HALT,
2237                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
2238                         error);
2239 }
2240
2241 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2242         Manager *m = userdata;
2243
2244         return method_do_shutdown_or_sleep(
2245                         m, message,
2246                         HANDLE_SUSPEND,
2247                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
2248                         error);
2249 }
2250
2251 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2252         Manager *m = userdata;
2253
2254         return method_do_shutdown_or_sleep(
2255                         m, message,
2256                         HANDLE_HIBERNATE,
2257                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
2258                         error);
2259 }
2260
2261 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2262         Manager *m = userdata;
2263
2264         return method_do_shutdown_or_sleep(
2265                         m, message,
2266                         HANDLE_HYBRID_SLEEP,
2267                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2268                         error);
2269 }
2270
2271 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2272         Manager *m = userdata;
2273
2274         return method_do_shutdown_or_sleep(
2275                         m, message,
2276                         HANDLE_SUSPEND_THEN_HIBERNATE,
2277                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2278                         error);
2279 }
2280
2281 static int method_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2282         Manager *m = userdata;
2283
2284         return method_do_shutdown_or_sleep(
2285                         m, message,
2286                         HANDLE_SLEEP,
2287                         /* with_flags = */ true,
2288                         error);
2289 }
2290
2291 static int nologin_timeout_handler(
2292                         sd_event_source *s,
2293                         uint64_t usec,
2294                         void *userdata) {
2295
2296         Manager *m = userdata;
2297
2298         log_info("Creating /run/nologin, blocking further logins...");
2299
2300         m->unlink_nologin =
2301                 create_shutdown_run_nologin_or_warn() >= 0;
2302
2303         return 0;
2304 }
2305
2306 static usec_t nologin_timeout_usec(usec_t elapse) {
2307         /* Issue /run/nologin five minutes before shutdown */
2308         return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
2309 }
2310
2311 void manager_load_scheduled_shutdown(Manager *m) {
2312         _cleanup_fclose_ FILE *f = NULL;
2313         _cleanup_free_ char *usec = NULL,
2314                *warn_wall = NULL,
2315                *mode = NULL,
2316                *wall_message = NULL,
2317                *uid = NULL,
2318                *tty = NULL;
2319         int r;
2320
2321         assert(m);
2322
2323         r = parse_env_file(f, SHUTDOWN_SCHEDULE_FILE,
2324                         "USEC", &usec,
2325                         "WARN_WALL", &warn_wall,
2326                         "MODE", &mode,
2327                         "WALL_MESSAGE", &wall_message,
2328                         "UID", &uid,
2329                         "TTY", &tty);
2330
2331         /* reset will delete the file */
2332         reset_scheduled_shutdown(m);
2333
2334         if (r == -ENOENT)
2335                 return;
2336         if (r < 0)
2337                 return (void) log_debug_errno(r, "Failed to parse " SHUTDOWN_SCHEDULE_FILE ": %m");
2338
2339         HandleAction handle = handle_action_from_string(mode);
2340         if (handle < 0)
2341                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse scheduled shutdown type: %s", mode);
2342
2343         if (!usec)
2344                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "USEC is required");
2345         if (deserialize_usec(usec, &m->scheduled_shutdown_timeout) < 0)
2346                 return;
2347
2348         /* assign parsed type only after we know usec is also valid */
2349         m->scheduled_shutdown_action = handle;
2350
2351         if (warn_wall) {
2352                 r = parse_boolean(warn_wall);
2353                 if (r < 0)
2354                         log_debug_errno(r, "Failed to parse enabling wall messages");
2355                 else
2356                         m->enable_wall_messages = r;
2357         }
2358
2359         if (wall_message) {
2360                 _cleanup_free_ char *unescaped = NULL;
2361                 r = cunescape(wall_message, 0, &unescaped);
2362                 if (r < 0)
2363                         log_debug_errno(r, "Failed to parse wall message: %s", wall_message);
2364                 else
2365                         free_and_replace(m->wall_message, unescaped);
2366         }
2367
2368         if (uid) {
2369                 r = parse_uid(uid, &m->scheduled_shutdown_uid);
2370                 if (r < 0)
2371                         log_debug_errno(r, "Failed to parse wall uid: %s", uid);
2372         }
2373
2374         free_and_replace(m->scheduled_shutdown_tty, tty);
2375
2376         r = manager_setup_shutdown_timers(m);
2377         if (r < 0)
2378                 return reset_scheduled_shutdown(m);
2379
2380         (void) manager_setup_wall_message_timer(m);
2381         (void) update_schedule_file(m);
2382
2383         return;
2384 }
2385
2386 static int update_schedule_file(Manager *m) {
2387         _cleanup_(unlink_and_freep) char *temp_path = NULL;
2388         _cleanup_fclose_ FILE *f = NULL;
2389         int r;
2390
2391         assert(m);
2392         assert(handle_action_valid(m->scheduled_shutdown_action));
2393
2394         r = mkdir_parents_label(SHUTDOWN_SCHEDULE_FILE, 0755);
2395         if (r < 0)
2396                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2397
2398         r = fopen_temporary(SHUTDOWN_SCHEDULE_FILE, &f, &temp_path);
2399         if (r < 0)
2400                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2401
2402         (void) fchmod(fileno(f), 0644);
2403
2404         serialize_usec(f, "USEC", m->scheduled_shutdown_timeout);
2405         serialize_item_format(f, "WARN_WALL", "%s", one_zero(m->enable_wall_messages));
2406         serialize_item_format(f, "MODE", "%s", handle_action_to_string(m->scheduled_shutdown_action));
2407         serialize_item_format(f, "UID", UID_FMT, m->scheduled_shutdown_uid);
2408
2409         if (m->scheduled_shutdown_tty)
2410                 serialize_item_format(f, "TTY", "%s", m->scheduled_shutdown_tty);
2411
2412         if (!isempty(m->wall_message)) {
2413                 r = serialize_item_escaped(f, "WALL_MESSAGE", m->wall_message);
2414                 if (r < 0)
2415                         goto fail;
2416         }
2417
2418         r = fflush_and_check(f);
2419         if (r < 0)
2420                 goto fail;
2421
2422         if (rename(temp_path, SHUTDOWN_SCHEDULE_FILE) < 0) {
2423                 r = -errno;
2424                 goto fail;
2425         }
2426
2427         temp_path = mfree(temp_path);
2428         return 0;
2429
2430 fail:
2431         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2432
2433         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2434 }
2435
2436 static void reset_scheduled_shutdown(Manager *m) {
2437         assert(m);
2438
2439         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2440         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2441         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2442
2443         m->scheduled_shutdown_action = _HANDLE_ACTION_INVALID;
2444         m->scheduled_shutdown_timeout = USEC_INFINITY;
2445         m->scheduled_shutdown_uid = UID_INVALID;
2446         m->scheduled_shutdown_tty = mfree(m->scheduled_shutdown_tty);
2447         m->shutdown_dry_run = false;
2448
2449         if (m->unlink_nologin) {
2450                 (void) unlink_or_warn("/run/nologin");
2451                 m->unlink_nologin = false;
2452         }
2453
2454         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2455 }
2456
2457 static int manager_scheduled_shutdown_handler(
2458                         sd_event_source *s,
2459                         uint64_t usec,
2460                         void *userdata) {
2461
2462         Manager *m = ASSERT_PTR(userdata);
2463         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2464         const HandleActionData *a;
2465         int r;
2466
2467         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2468
2469         /* Don't allow multiple jobs being executed at the same time */
2470         if (m->delayed_action) {
2471                 r = log_error_errno(SYNTHETIC_ERRNO(EALREADY),
2472                                     "Scheduled shutdown to %s failed: shutdown or sleep operation already in progress.",
2473                                     a->target);
2474                 goto error;
2475         }
2476
2477         if (m->shutdown_dry_run) {
2478                 /* We do not process delay inhibitors here.  Otherwise, we
2479                  * would have to be considered "in progress" (like the check
2480                  * above) for some seconds after our admin has seen the final
2481                  * wall message. */
2482
2483                 bus_manager_log_shutdown(m, a);
2484                 log_info("Running in dry run, suppressing action.");
2485                 reset_scheduled_shutdown(m);
2486
2487                 return 0;
2488         }
2489
2490         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, &error);
2491         if (r < 0) {
2492                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", a->target);
2493                 goto error;
2494         }
2495
2496         return 0;
2497
2498 error:
2499         reset_scheduled_shutdown(m);
2500         return r;
2501 }
2502
2503 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2504         Manager *m = ASSERT_PTR(userdata);
2505         HandleAction handle;
2506         const HandleActionData *a;
2507         uint64_t elapse;
2508         char *type;
2509         int r;
2510         bool dry_run = false;
2511
2512         assert(message);
2513
2514         r = sd_bus_message_read(message, "st", &type, &elapse);
2515         if (r < 0)
2516                 return r;
2517
2518         if (startswith(type, "dry-")) {
2519                 type += 4;
2520                 dry_run = true;
2521         }
2522
2523         handle = handle_action_from_string(type);
2524         if (!HANDLE_ACTION_IS_SHUTDOWN(handle))
2525                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type: %s", type);
2526
2527         assert_se(a = handle_action_lookup(handle));
2528         assert(a->polkit_action);
2529
2530         r = verify_shutdown_creds(m, message, a, 0, error);
2531         if (r != 0)
2532                 return r;
2533
2534         m->scheduled_shutdown_action = handle;
2535         m->shutdown_dry_run = dry_run;
2536         m->scheduled_shutdown_timeout = elapse;
2537
2538         r = manager_setup_shutdown_timers(m);
2539         if (r < 0)
2540                 return r;
2541
2542         r = setup_wall_message_timer(m, message);
2543         if (r >= 0)
2544                 r = update_schedule_file(m);
2545
2546         if (r < 0) {
2547                 reset_scheduled_shutdown(m);
2548                 return r;
2549         }
2550
2551         return sd_bus_reply_method_return(message, NULL);
2552 }
2553
2554 static int manager_setup_shutdown_timers(Manager* m) {
2555         int r;
2556
2557         r = event_reset_time(m->event, &m->scheduled_shutdown_timeout_source,
2558                              CLOCK_REALTIME,
2559                              m->scheduled_shutdown_timeout, 0,
2560                              manager_scheduled_shutdown_handler, m,
2561                              0, "scheduled-shutdown-timeout", true);
2562         if (r < 0)
2563                 goto fail;
2564
2565         r = event_reset_time(m->event, &m->nologin_timeout_source,
2566                              CLOCK_REALTIME,
2567                              nologin_timeout_usec(m->scheduled_shutdown_timeout), 0,
2568                              nologin_timeout_handler, m,
2569                              0, "nologin-timeout", true);
2570         if (r < 0)
2571                 goto fail;
2572
2573         return 0;
2574
2575 fail:
2576         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2577         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2578
2579         return r;
2580 }
2581
2582 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2583         Manager *m = ASSERT_PTR(userdata);
2584         const HandleActionData *a;
2585         bool cancelled;
2586         int r;
2587
2588         assert(message);
2589
2590         cancelled = handle_action_valid(m->scheduled_shutdown_action) && m->scheduled_shutdown_action != HANDLE_IGNORE;
2591         if (!cancelled)
2592                 return sd_bus_reply_method_return(message, "b", false);
2593
2594         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2595         if (!a->polkit_action)
2596                 return sd_bus_error_set(error, SD_BUS_ERROR_AUTH_FAILED, "Unsupported shutdown type");
2597
2598         r = bus_verify_polkit_async(
2599                         message,
2600                         a->polkit_action,
2601                         /* details= */ NULL,
2602                         &m->polkit_registry,
2603                         error);
2604         if (r < 0)
2605                 return r;
2606         if (r == 0)
2607                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2608
2609         if (m->enable_wall_messages) {
2610                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2611                 const char *tty = NULL;
2612                 uid_t uid = 0;
2613
2614                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2615                 if (r >= 0) {
2616                         (void) sd_bus_creds_get_uid(creds, &uid);
2617                         (void) sd_bus_creds_get_tty(creds, &tty);
2618                 }
2619
2620                 _cleanup_free_ char *username = uid_to_name(uid);
2621
2622                 log_struct(LOG_INFO,
2623                            LOG_MESSAGE("System shutdown has been cancelled"),
2624                            "ACTION=%s", handle_action_to_string(a->handle),
2625                            "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2626                            username ? "OPERATOR=%s" : NULL, username);
2627
2628                 (void) wall("System shutdown has been cancelled",
2629                             username, tty, logind_wall_tty_filter, m);
2630         }
2631
2632         reset_scheduled_shutdown(m);
2633
2634         return sd_bus_reply_method_return(message, "b", true);
2635 }
2636
2637 static int method_can_shutdown_or_sleep(
2638                 Manager *m,
2639                 sd_bus_message *message,
2640                 HandleAction action,
2641                 sd_bus_error *error) {
2642
2643         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2644         bool multiple_sessions, challenge, blocked, check_unit_state = true;
2645         const HandleActionData *a;
2646         const char *result = NULL;
2647         uid_t uid;
2648         int r;
2649
2650         assert(m);
2651         assert(message);
2652         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2653
2654         if (action == HANDLE_SLEEP) {
2655                 HandleAction selected;
2656
2657                 selected = handle_action_sleep_select(m);
2658                 if (selected < 0)
2659                         return sd_bus_reply_method_return(message, "s", "na");
2660
2661                 check_unit_state = false; /* Already handled by handle_action_sleep_select */
2662
2663                 assert_se(a = handle_action_lookup(selected));
2664
2665         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2666                 SleepSupport support;
2667
2668                 assert_se(a = handle_action_lookup(action));
2669
2670                 assert(a->sleep_operation >= 0);
2671                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2672
2673                 r = sleep_supported_full(a->sleep_operation, &support);
2674                 if (r < 0)
2675                         return r;
2676                 if (r == 0)
2677                         return sd_bus_reply_method_return(message, "s", support == SLEEP_DISABLED ? "no" : "na");
2678         } else
2679                 assert_se(a = handle_action_lookup(action));
2680
2681         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2682         if (r < 0)
2683                 return r;
2684
2685         r = sd_bus_creds_get_euid(creds, &uid);
2686         if (r < 0)
2687                 return r;
2688
2689         r = have_multiple_sessions(m, uid);
2690         if (r < 0)
2691                 return r;
2692
2693         multiple_sessions = r > 0;
2694         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2695
2696         if (check_unit_state && a->target) {
2697                 _cleanup_free_ char *load_state = NULL;
2698
2699                 r = unit_load_state(m->bus, a->target, &load_state);
2700                 if (r < 0)
2701                         return r;
2702
2703                 if (!streq(load_state, "loaded")) {
2704                         result = "no";
2705                         goto finish;
2706                 }
2707         }
2708
2709         if (multiple_sessions) {
2710                 r = bus_test_polkit(
2711                                 message,
2712                                 a->polkit_action_multiple_sessions,
2713                                 /* details= */ NULL,
2714                                 /* good_user= */ UID_INVALID,
2715                                 &challenge,
2716                                 error);
2717                 if (r < 0)
2718                         return r;
2719
2720                 if (r > 0)
2721                         result = "yes";
2722                 else if (challenge)
2723                         result = "challenge";
2724                 else
2725                         result = "no";
2726         }
2727
2728         if (blocked) {
2729                 r = bus_test_polkit(
2730                                 message,
2731                                 a->polkit_action_ignore_inhibit,
2732                                 /* details= */ NULL,
2733                                 /* good_user= */ UID_INVALID,
2734                                 &challenge,
2735                                 error);
2736                 if (r < 0)
2737                         return r;
2738
2739                 if (r > 0) {
2740                         if (!result)
2741                                 result = "yes";
2742                 } else if (challenge) {
2743                         if (!result || streq(result, "yes"))
2744                                 result = "challenge";
2745                 } else
2746                         result = "no";
2747         }
2748
2749         if (!multiple_sessions && !blocked) {
2750                 /* If neither inhibit nor multiple sessions
2751                  * apply then just check the normal policy */
2752
2753                 r = bus_test_polkit(
2754                                 message,
2755                                 a->polkit_action,
2756                                 /* details= */ NULL,
2757                                 /* good_user= */ UID_INVALID,
2758                                 &challenge,
2759                                 error);
2760                 if (r < 0)
2761                         return r;
2762
2763                 if (r > 0)
2764                         result = "yes";
2765                 else if (challenge)
2766                         result = "challenge";
2767                 else
2768                         result = "no";
2769         }
2770
2771  finish:
2772         return sd_bus_reply_method_return(message, "s", result);
2773 }
2774
2775 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2776         Manager *m = userdata;
2777
2778         return method_can_shutdown_or_sleep(m, message, HANDLE_POWEROFF, error);
2779 }
2780
2781 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2782         Manager *m = userdata;
2783
2784         return method_can_shutdown_or_sleep(m, message, HANDLE_REBOOT, error);
2785 }
2786
2787 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2788         Manager *m = userdata;
2789
2790         return method_can_shutdown_or_sleep(m, message, HANDLE_HALT, error);
2791 }
2792
2793 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2794         Manager *m = userdata;
2795
2796         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND, error);
2797 }
2798
2799 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2800         Manager *m = userdata;
2801
2802         return method_can_shutdown_or_sleep(m, message, HANDLE_HIBERNATE, error);
2803 }
2804
2805 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2806         Manager *m = userdata;
2807
2808         return method_can_shutdown_or_sleep(m, message, HANDLE_HYBRID_SLEEP, error);
2809 }
2810
2811 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2812         Manager *m = userdata;
2813
2814         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND_THEN_HIBERNATE, error);
2815 }
2816
2817 static int method_can_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2818         Manager *m = userdata;
2819
2820         return method_can_shutdown_or_sleep(m, message, HANDLE_SLEEP, error);
2821 }
2822
2823 static int property_get_reboot_parameter(
2824                 sd_bus *bus,
2825                 const char *path,
2826                 const char *interface,
2827                 const char *property,
2828                 sd_bus_message *reply,
2829                 void *userdata,
2830                 sd_bus_error *error) {
2831         _cleanup_free_ char *parameter = NULL;
2832         int r;
2833
2834         assert(bus);
2835         assert(reply);
2836         assert(userdata);
2837
2838         r = read_reboot_parameter(&parameter);
2839         if (r < 0)
2840                 return r;
2841
2842         return sd_bus_message_append(reply, "s", parameter);
2843 }
2844
2845 static int method_set_reboot_parameter(
2846                 sd_bus_message *message,
2847                 void *userdata,
2848                 sd_bus_error *error) {
2849
2850         Manager *m = ASSERT_PTR(userdata);
2851         const char *arg;
2852         int r;
2853
2854         assert(message);
2855
2856         r = sd_bus_message_read(message, "s", &arg);
2857         if (r < 0)
2858                 return r;
2859
2860         r = detect_container();
2861         if (r < 0)
2862                 return r;
2863         if (r > 0)
2864                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2865                                          "Reboot parameter not supported in containers, refusing.");
2866
2867         r = bus_verify_polkit_async(
2868                         message,
2869                         "org.freedesktop.login1.set-reboot-parameter",
2870                         /* details= */ NULL,
2871                         &m->polkit_registry,
2872                         error);
2873         if (r < 0)
2874                 return r;
2875         if (r == 0)
2876                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2877
2878         r = update_reboot_parameter_and_warn(arg, false);
2879         if (r < 0)
2880                 return r;
2881
2882         return sd_bus_reply_method_return(message, NULL);
2883 }
2884
2885 static int method_can_reboot_parameter(
2886                 sd_bus_message *message,
2887                 void *userdata,
2888                 sd_bus_error *error) {
2889
2890         _unused_ Manager *m = ASSERT_PTR(userdata);
2891         int r;
2892
2893         assert(message);
2894
2895         r = detect_container();
2896         if (r < 0)
2897                 return r;
2898         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2899                 return sd_bus_reply_method_return(message, "s", "na");
2900
2901         return return_test_polkit(
2902                         message,
2903                         "org.freedesktop.login1.set-reboot-parameter",
2904                         /* details= */ NULL,
2905                         /* good_user= */ UID_INVALID,
2906                         error);
2907 }
2908
2909 static int property_get_reboot_to_firmware_setup(
2910                 sd_bus *bus,
2911                 const char *path,
2912                 const char *interface,
2913                 const char *property,
2914                 sd_bus_message *reply,
2915                 void *userdata,
2916                 sd_bus_error *error) {
2917         int r;
2918
2919         assert(bus);
2920         assert(reply);
2921         assert(userdata);
2922
2923         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2924         if (r == -ENXIO) {
2925                 /* EFI case: let's see what is currently configured in the EFI variables */
2926                 r = efi_get_reboot_to_firmware();
2927                 if (r < 0 && r != -EOPNOTSUPP)
2928                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2929         } else if (r < 0)
2930                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2931         else if (r > 0) {
2932                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2933                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2934                         if (errno != ENOENT)
2935                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2936
2937                         r = false;
2938                 } else
2939                         r = true;
2940         }
2941
2942         return sd_bus_message_append(reply, "b", r > 0);
2943 }
2944
2945 static int method_set_reboot_to_firmware_setup(
2946                 sd_bus_message *message,
2947                 void *userdata,
2948                 sd_bus_error *error) {
2949
2950         Manager *m = ASSERT_PTR(userdata);
2951         bool use_efi;
2952         int b, r;
2953
2954         assert(message);
2955
2956         r = sd_bus_message_read(message, "b", &b);
2957         if (r < 0)
2958                 return r;
2959
2960         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2961         if (r == -ENXIO) {
2962                 /* EFI case: let's see what the firmware supports */
2963
2964                 r = efi_reboot_to_firmware_supported();
2965                 if (r == -EOPNOTSUPP)
2966                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2967                 if (r < 0)
2968                         return r;
2969
2970                 use_efi = true;
2971
2972         } else if (r <= 0) {
2973                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2974
2975                 if (r < 0)
2976                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2977
2978                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2979         } else
2980                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2981                 use_efi = false;
2982
2983         r = bus_verify_polkit_async(
2984                         message,
2985                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2986                         /* details= */ NULL,
2987                         &m->polkit_registry,
2988                         error);
2989         if (r < 0)
2990                 return r;
2991         if (r == 0)
2992                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2993
2994         if (use_efi) {
2995                 r = efi_set_reboot_to_firmware(b);
2996                 if (r < 0)
2997                         return r;
2998         } else {
2999                 if (b) {
3000                         r = touch("/run/systemd/reboot-to-firmware-setup");
3001                         if (r < 0)
3002                                 return r;
3003                 } else {
3004                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
3005                                 return -errno;
3006                 }
3007         }
3008
3009         return sd_bus_reply_method_return(message, NULL);
3010 }
3011
3012 static int method_can_reboot_to_firmware_setup(
3013                 sd_bus_message *message,
3014                 void *userdata,
3015                 sd_bus_error *error) {
3016
3017         _unused_ Manager *m = ASSERT_PTR(userdata);
3018         int r;
3019
3020         assert(message);
3021
3022         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
3023         if (r == -ENXIO) {
3024                 /* EFI case: let's see what the firmware supports */
3025
3026                 r = efi_reboot_to_firmware_supported();
3027                 if (r < 0) {
3028                         if (r != -EOPNOTSUPP)
3029                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
3030
3031                         return sd_bus_reply_method_return(message, "s", "na");
3032                 }
3033
3034         } else if (r <= 0) {
3035                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
3036
3037                 if (r < 0)
3038                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
3039
3040                 return sd_bus_reply_method_return(message, "s", "na");
3041         }
3042
3043         return return_test_polkit(
3044                         message,
3045                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
3046                         /* details= */ NULL,
3047                         /* good_user= */ UID_INVALID,
3048                         error);
3049 }
3050
3051 static int property_get_reboot_to_boot_loader_menu(
3052                 sd_bus *bus,
3053                 const char *path,
3054                 const char *interface,
3055                 const char *property,
3056                 sd_bus_message *reply,
3057                 void *userdata,
3058                 sd_bus_error *error) {
3059
3060         uint64_t x = UINT64_MAX;
3061         int r;
3062
3063         assert(bus);
3064         assert(reply);
3065         assert(userdata);
3066
3067         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3068         if (r == -ENXIO) {
3069                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
3070                  *
3071                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
3072                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
3073                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
3074                  */
3075
3076                 r = efi_loader_get_config_timeout_one_shot(&x);
3077                 if (r < 0) {
3078                         if (r != -ENOENT)
3079                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
3080                 }
3081
3082         } else if (r < 0)
3083                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3084         else if (r > 0) {
3085                 _cleanup_free_ char *v = NULL;
3086
3087                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
3088
3089                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
3090                 if (r < 0) {
3091                         if (r != -ENOENT)
3092                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
3093                 } else {
3094                         r = safe_atou64(v, &x);
3095                         if (r < 0)
3096                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
3097                 }
3098         }
3099
3100         return sd_bus_message_append(reply, "t", x);
3101 }
3102
3103 static int method_set_reboot_to_boot_loader_menu(
3104                 sd_bus_message *message,
3105                 void *userdata,
3106                 sd_bus_error *error) {
3107
3108         Manager *m = ASSERT_PTR(userdata);
3109         bool use_efi;
3110         uint64_t x;
3111         int r;
3112
3113         assert(message);
3114
3115         r = sd_bus_message_read(message, "t", &x);
3116         if (r < 0)
3117                 return r;
3118
3119         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3120         if (r == -ENXIO) {
3121                 uint64_t features;
3122
3123                 /* EFI case: let's see if booting into boot loader menu is supported. */
3124
3125                 r = efi_loader_get_features(&features);
3126                 if (r < 0)
3127                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3128                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3129                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3130
3131                 use_efi = true;
3132
3133         } else if (r <= 0) {
3134                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
3135
3136                 if (r < 0)
3137                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3138
3139                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3140         } else
3141                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
3142                 use_efi = false;
3143
3144         r = bus_verify_polkit_async(
3145                         message,
3146                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3147                         /* details= */ NULL,
3148                         &m->polkit_registry,
3149                         error);
3150         if (r < 0)
3151                 return r;
3152         if (r == 0)
3153                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3154
3155         if (use_efi) {
3156                 if (x == UINT64_MAX)
3157                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
3158                 else {
3159                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3160                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
3161
3162                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
3163                 }
3164                 if (r < 0)
3165                         return r;
3166         } else {
3167                 if (x == UINT64_MAX) {
3168                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
3169                                 return -errno;
3170                 } else {
3171                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3172
3173                         xsprintf(buf, "%" PRIu64, x); /* μs granularity */
3174
3175                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
3176                         if (r < 0)
3177                                 return r;
3178                 }
3179         }
3180
3181         return sd_bus_reply_method_return(message, NULL);
3182 }
3183
3184 static int method_can_reboot_to_boot_loader_menu(
3185                 sd_bus_message *message,
3186                 void *userdata,
3187                 sd_bus_error *error) {
3188
3189         _unused_ Manager *m = ASSERT_PTR(userdata);
3190         int r;
3191
3192         assert(message);
3193
3194         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3195         if (r == -ENXIO) {
3196                 uint64_t features = 0;
3197
3198                 /* EFI case, let's see if booting into boot loader menu is supported. */
3199
3200                 r = efi_loader_get_features(&features);
3201                 if (r < 0)
3202                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3203                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3204                         return sd_bus_reply_method_return(message, "s", "na");
3205
3206         } else if (r <= 0) {
3207                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
3208
3209                 if (r < 0)
3210                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3211
3212                 return sd_bus_reply_method_return(message, "s", "na");
3213         }
3214
3215         return return_test_polkit(
3216                         message,
3217                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3218                         /* details= */ NULL,
3219                         /* good_user= */ UID_INVALID,
3220                         error);
3221 }
3222
3223 static int property_get_reboot_to_boot_loader_entry(
3224                 sd_bus *bus,
3225                 const char *path,
3226                 const char *interface,
3227                 const char *property,
3228                 sd_bus_message *reply,
3229                 void *userdata,
3230                 sd_bus_error *error) {
3231
3232         _cleanup_free_ char *v = NULL;
3233         Manager *m = ASSERT_PTR(userdata);
3234         const char *x = NULL;
3235         int r;
3236
3237         assert(bus);
3238         assert(reply);
3239
3240         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3241         if (r == -ENXIO) {
3242                 /* EFI case: let's read the LoaderEntryOneShot variable */
3243
3244                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
3245                 if (r < 0) {
3246                         if (r != -ENOENT)
3247                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
3248                 } else
3249                         x = m->efi_loader_entry_one_shot;
3250
3251         } else if (r < 0)
3252                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3253         else if (r > 0) {
3254
3255                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
3256
3257                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
3258                 if (r < 0) {
3259                         if (r != -ENOENT)
3260                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
3261                 } else if (!efi_loader_entry_name_valid(v))
3262                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
3263                 else
3264                         x = v;
3265         }
3266
3267         return sd_bus_message_append(reply, "s", x);
3268 }
3269
3270 static int boot_loader_entry_exists(Manager *m, const char *id) {
3271         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3272         int r;
3273
3274         assert(m);
3275         assert(id);
3276
3277         r = boot_config_load_auto(&config, NULL, NULL);
3278         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
3279                 return r;
3280
3281         r = manager_read_efi_boot_loader_entries(m);
3282         if (r >= 0)
3283                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3284
3285         return !!boot_config_find_entry(&config, id);
3286 }
3287
3288 static int method_set_reboot_to_boot_loader_entry(
3289                 sd_bus_message *message,
3290                 void *userdata,
3291                 sd_bus_error *error) {
3292
3293         Manager *m = ASSERT_PTR(userdata);
3294         bool use_efi;
3295         const char *v;
3296         int r;
3297
3298         assert(message);
3299
3300         r = sd_bus_message_read(message, "s", &v);
3301         if (r < 0)
3302                 return r;
3303
3304         if (isempty(v))
3305                 v = NULL;
3306         else if (efi_loader_entry_name_valid(v)) {
3307                 r = boot_loader_entry_exists(m, v);
3308                 if (r < 0)
3309                         return r;
3310                 if (r == 0)
3311                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3312         } else
3313                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3314
3315         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3316         if (r == -ENXIO) {
3317                 uint64_t features;
3318
3319                 /* EFI case: let's see if booting into boot loader entry is supported. */
3320
3321                 r = efi_loader_get_features(&features);
3322                 if (r < 0)
3323                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3324                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3325                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3326
3327                 use_efi = true;
3328
3329         } else if (r <= 0) {
3330                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3331
3332                 if (r < 0)
3333                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3334
3335                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3336         } else
3337                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3338                 use_efi = false;
3339
3340         r = bus_verify_polkit_async(
3341                         message,
3342                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3343                         /* details= */ NULL,
3344                         &m->polkit_registry,
3345                         error);
3346         if (r < 0)
3347                 return r;
3348         if (r == 0)
3349                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3350
3351         if (use_efi) {
3352                 if (isempty(v))
3353                         /* Delete item */
3354                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3355                 else
3356                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3357                 if (r < 0)
3358                         return r;
3359         } else {
3360                 if (isempty(v)) {
3361                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3362                                 return -errno;
3363                 } else {
3364                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3365                         if (r < 0)
3366                                 return r;
3367                 }
3368         }
3369
3370         return sd_bus_reply_method_return(message, NULL);
3371 }
3372
3373 static int method_can_reboot_to_boot_loader_entry(
3374                 sd_bus_message *message,
3375                 void *userdata,
3376                 sd_bus_error *error) {
3377
3378         _unused_ Manager *m = ASSERT_PTR(userdata);
3379         int r;
3380
3381         assert(message);
3382
3383         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3384         if (r == -ENXIO) {
3385                 uint64_t features = 0;
3386
3387                 /* EFI case, let's see if booting into boot loader entry is supported. */
3388
3389                 r = efi_loader_get_features(&features);
3390                 if (r < 0)
3391                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3392                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3393                         return sd_bus_reply_method_return(message, "s", "na");
3394
3395         } else if (r <= 0) {
3396                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3397
3398                 if (r < 0)
3399                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3400
3401                 return sd_bus_reply_method_return(message, "s", "na");
3402         }
3403
3404         return return_test_polkit(
3405                         message,
3406                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3407                         /* details= */ NULL,
3408                         /* good_user= */ UID_INVALID,
3409                         error);
3410 }
3411
3412 static int property_get_boot_loader_entries(
3413                 sd_bus *bus,
3414                 const char *path,
3415                 const char *interface,
3416                 const char *property,
3417                 sd_bus_message *reply,
3418                 void *userdata,
3419                 sd_bus_error *error) {
3420
3421         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3422         Manager *m = ASSERT_PTR(userdata);
3423         size_t i;
3424         int r;
3425
3426         assert(bus);
3427         assert(reply);
3428
3429         r = boot_config_load_auto(&config, NULL, NULL);
3430         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3431                 return r;
3432
3433         r = manager_read_efi_boot_loader_entries(m);
3434         if (r >= 0)
3435                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3436
3437         r = sd_bus_message_open_container(reply, 'a', "s");
3438         if (r < 0)
3439                 return r;
3440
3441         for (i = 0; i < config.n_entries; i++) {
3442                 BootEntry *e = config.entries + i;
3443
3444                 r = sd_bus_message_append(reply, "s", e->id);
3445                 if (r < 0)
3446                         return r;
3447         }
3448
3449         return sd_bus_message_close_container(reply);
3450 }
3451
3452 static int method_set_wall_message(
3453                 sd_bus_message *message,
3454                 void *userdata,
3455                 sd_bus_error *error) {
3456
3457         int r;
3458         Manager *m = ASSERT_PTR(userdata);
3459         char *wall_message;
3460         int enable_wall_messages;
3461
3462         assert(message);
3463
3464         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3465         if (r < 0)
3466                 return r;
3467
3468         if (strlen(wall_message) > WALL_MESSAGE_MAX)
3469                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3470                         "Wall message too long, maximum permitted length is %u characters.",
3471                         WALL_MESSAGE_MAX);
3472
3473         /* Short-circuit the operation if the desired state is already in place, to
3474          * avoid an unnecessary polkit permission check. */
3475         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3476             m->enable_wall_messages == enable_wall_messages)
3477                 goto done;
3478
3479         r = bus_verify_polkit_async(
3480                         message,
3481                         "org.freedesktop.login1.set-wall-message",
3482                         /* details= */ NULL,
3483                         &m->polkit_registry,
3484                         error);
3485         if (r < 0)
3486                 return r;
3487         if (r == 0)
3488                 return 1; /* Will call us back */
3489
3490         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3491         if (r < 0)
3492                 return log_oom();
3493
3494         m->enable_wall_messages = enable_wall_messages;
3495
3496  done:
3497         return sd_bus_reply_method_return(message, NULL);
3498 }
3499
3500 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3501         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3502         _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
3503         const char *who, *why, *what, *mode;
3504         _cleanup_free_ char *id = NULL;
3505         _cleanup_close_ int fifo_fd = -EBADF;
3506         Manager *m = ASSERT_PTR(userdata);
3507         InhibitMode mm;
3508         InhibitWhat w;
3509         pid_t pid;
3510         uid_t uid;
3511         int r;
3512
3513         assert(message);
3514
3515         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3516         if (r < 0)
3517                 return r;
3518
3519         w = inhibit_what_from_string(what);
3520         if (w <= 0)
3521                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3522                                          "Invalid what specification %s", what);
3523
3524         mm = inhibit_mode_from_string(mode);
3525         if (mm < 0)
3526                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3527                                          "Invalid mode specification %s", mode);
3528
3529         /* Delay is only supported for shutdown/sleep */
3530         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3531                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3532                                          "Delay inhibitors only supported for shutdown and sleep");
3533
3534         /* Don't allow taking delay locks while we are already
3535          * executing the operation. We shouldn't create the impression
3536          * that the lock was successful if the machine is about to go
3537          * down/suspend any moment. */
3538         if (m->delayed_action && m->delayed_action->inhibit_what & w)
3539                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3540                                          "The operation inhibition has been requested for is already running");
3541
3542         r = bus_verify_polkit_async(
3543                         message,
3544                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3545                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3546                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3547                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3548                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3549                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3550                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3551                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3552                         /* details= */ NULL,
3553                         &m->polkit_registry,
3554                         error);
3555         if (r < 0)
3556                 return r;
3557         if (r == 0)
3558                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3559
3560         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3561         if (r < 0)
3562                 return r;
3563
3564         r = sd_bus_creds_get_euid(creds, &uid);
3565         if (r < 0)
3566                 return r;
3567
3568         r = sd_bus_creds_get_pid(creds, &pid);
3569         if (r < 0)
3570                 return r;
3571
3572         r = pidref_set_pid(&pidref, pid);
3573         if (r < 0)
3574                 return sd_bus_error_set_errnof(error, r, "Failed pin source process "PID_FMT": %m", pid);
3575
3576         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3577                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3578                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3579                                          m->inhibitors_max);
3580
3581         do {
3582                 id = mfree(id);
3583
3584                 if (asprintf(&id, "%" PRIu64, ++m->inhibit_counter) < 0)
3585                         return -ENOMEM;
3586
3587         } while (hashmap_get(m->inhibitors, id));
3588
3589         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3590         r = manager_add_inhibitor(m, id, &i);
3591         if (r < 0)
3592                 return r;
3593
3594         i->what = w;
3595         i->mode = mm;
3596         i->pid = TAKE_PIDREF(pidref);
3597         i->uid = uid;
3598         i->why = strdup(why);
3599         i->who = strdup(who);
3600
3601         if (!i->why || !i->who)
3602                 return -ENOMEM;
3603
3604         fifo_fd = inhibitor_create_fifo(i);
3605         if (fifo_fd < 0)
3606                 return fifo_fd;
3607
3608         r = inhibitor_start(i);
3609         if (r < 0)
3610                 return r;
3611         TAKE_PTR(i);
3612
3613         return sd_bus_reply_method_return(message, "h", fifo_fd);
3614 }
3615
3616 static const sd_bus_vtable manager_vtable[] = {
3617         SD_BUS_VTABLE_START(0),
3618
3619         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3620         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3621
3622         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3623         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3624         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3625         SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3626         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3627         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3628         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3629         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3630         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3631         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3632         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3633         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3634         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3635         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3636         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3637         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3638         SD_BUS_PROPERTY("SleepOperation", "as", property_get_sleep_operations, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3639         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3640         SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3641         SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3642         SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3643         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3644         SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3645         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3646         SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3647         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3648         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3649         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3650         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3651         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3652         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3653         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3654         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3655         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3656         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3657         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3658         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3659         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3660         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3661         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3662         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3663         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3664         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3665         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3666         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3667         SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3668
3669         SD_BUS_METHOD_WITH_ARGS("GetSession",
3670                                 SD_BUS_ARGS("s", session_id),
3671                                 SD_BUS_RESULT("o", object_path),
3672                                 method_get_session,
3673                                 SD_BUS_VTABLE_UNPRIVILEGED),
3674         SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3675                                 SD_BUS_ARGS("u", pid),
3676                                 SD_BUS_RESULT("o", object_path),
3677                                 method_get_session_by_pid,
3678                                 SD_BUS_VTABLE_UNPRIVILEGED),
3679         SD_BUS_METHOD_WITH_ARGS("GetUser",
3680                                 SD_BUS_ARGS("u", uid),
3681                                 SD_BUS_RESULT("o", object_path),
3682                                 method_get_user,
3683                                 SD_BUS_VTABLE_UNPRIVILEGED),
3684         SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3685                                 SD_BUS_ARGS("u", pid),
3686                                 SD_BUS_RESULT("o", object_path),
3687                                 method_get_user_by_pid,
3688                                 SD_BUS_VTABLE_UNPRIVILEGED),
3689         SD_BUS_METHOD_WITH_ARGS("GetSeat",
3690                                 SD_BUS_ARGS("s", seat_id),
3691                                 SD_BUS_RESULT("o", object_path),
3692                                 method_get_seat,
3693                                 SD_BUS_VTABLE_UNPRIVILEGED),
3694         SD_BUS_METHOD_WITH_ARGS("ListSessions",
3695                                 SD_BUS_NO_ARGS,
3696                                 SD_BUS_RESULT("a(susso)", sessions),
3697                                 method_list_sessions,
3698                                 SD_BUS_VTABLE_UNPRIVILEGED),
3699         SD_BUS_METHOD_WITH_ARGS("ListSessionsEx",
3700                                 SD_BUS_NO_ARGS,
3701                                 SD_BUS_RESULT("a(sussussbto)", sessions),
3702                                 method_list_sessions_ex,
3703                                 SD_BUS_VTABLE_UNPRIVILEGED),
3704         SD_BUS_METHOD_WITH_ARGS("ListUsers",
3705                                 SD_BUS_NO_ARGS,
3706                                 SD_BUS_RESULT("a(uso)", users),
3707                                 method_list_users,
3708                                 SD_BUS_VTABLE_UNPRIVILEGED),
3709         SD_BUS_METHOD_WITH_ARGS("ListSeats",
3710                                 SD_BUS_NO_ARGS,
3711                                 SD_BUS_RESULT("a(so)", seats),
3712                                 method_list_seats,
3713                                 SD_BUS_VTABLE_UNPRIVILEGED),
3714         SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3715                                 SD_BUS_NO_ARGS,
3716                                 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3717                                 method_list_inhibitors,
3718                                 SD_BUS_VTABLE_UNPRIVILEGED),
3719         SD_BUS_METHOD_WITH_ARGS("CreateSession",
3720                                 SD_BUS_ARGS("u", uid,
3721                                             "u", pid,
3722                                             "s", service,
3723                                             "s", type,
3724                                             "s", class,
3725                                             "s", desktop,
3726                                             "s", seat_id,
3727                                             "u", vtnr,
3728                                             "s", tty,
3729                                             "s", display,
3730                                             "b", remote,
3731                                             "s", remote_user,
3732                                             "s", remote_host,
3733                                             "a(sv)", properties),
3734                                 SD_BUS_RESULT("s", session_id,
3735                                               "o", object_path,
3736                                               "s", runtime_path,
3737                                               "h", fifo_fd,
3738                                               "u", uid,
3739                                               "s", seat_id,
3740                                               "u", vtnr,
3741                                               "b", existing),
3742                                 method_create_session,
3743                                 0),
3744         SD_BUS_METHOD_WITH_ARGS("CreateSessionWithPIDFD",
3745                                 SD_BUS_ARGS("u", uid,
3746                                             "h", pidfd,
3747                                             "s", service,
3748                                             "s", type,
3749                                             "s", class,
3750                                             "s", desktop,
3751                                             "s", seat_id,
3752                                             "u", vtnr,
3753                                             "s", tty,
3754                                             "s", display,
3755                                             "b", remote,
3756                                             "s", remote_user,
3757                                             "s", remote_host,
3758                                             "t", flags,
3759                                             "a(sv)", properties),
3760                                 SD_BUS_RESULT("s", session_id,
3761                                               "o", object_path,
3762                                               "s", runtime_path,
3763                                               "h", fifo_fd,
3764                                               "u", uid,
3765                                               "s", seat_id,
3766                                               "u", vtnr,
3767                                               "b", existing),
3768                                 method_create_session_pidfd,
3769                                 0),
3770         SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3771                                 SD_BUS_ARGS("s", session_id),
3772                                 SD_BUS_NO_RESULT,
3773                                 method_release_session,
3774                                 0),
3775         SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3776                                 SD_BUS_ARGS("s", session_id),
3777                                 SD_BUS_NO_RESULT,
3778                                 method_activate_session,
3779                                 SD_BUS_VTABLE_UNPRIVILEGED),
3780         SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3781                                 SD_BUS_ARGS("s", session_id, "s", seat_id),
3782                                 SD_BUS_NO_RESULT,
3783                                 method_activate_session_on_seat,
3784                                 SD_BUS_VTABLE_UNPRIVILEGED),
3785         SD_BUS_METHOD_WITH_ARGS("LockSession",
3786                                 SD_BUS_ARGS("s", session_id),
3787                                 SD_BUS_NO_RESULT,
3788                                 method_lock_session,
3789                                 SD_BUS_VTABLE_UNPRIVILEGED),
3790         SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3791                                 SD_BUS_ARGS("s", session_id),
3792                                 SD_BUS_NO_RESULT,
3793                                 method_lock_session,
3794                                 SD_BUS_VTABLE_UNPRIVILEGED),
3795         SD_BUS_METHOD("LockSessions",
3796                       NULL,
3797                       NULL,
3798                       method_lock_sessions,
3799                       SD_BUS_VTABLE_UNPRIVILEGED),
3800         SD_BUS_METHOD("UnlockSessions",
3801                       NULL,
3802                       NULL,
3803                       method_lock_sessions,
3804                       SD_BUS_VTABLE_UNPRIVILEGED),
3805         SD_BUS_METHOD_WITH_ARGS("KillSession",
3806                                 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3807                                 SD_BUS_NO_RESULT,
3808                                 method_kill_session,
3809                                 SD_BUS_VTABLE_UNPRIVILEGED),
3810         SD_BUS_METHOD_WITH_ARGS("KillUser",
3811                                 SD_BUS_ARGS("u", uid, "i", signal_number),
3812                                 SD_BUS_NO_RESULT,
3813                                 method_kill_user,
3814                                 SD_BUS_VTABLE_UNPRIVILEGED),
3815         SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3816                                 SD_BUS_ARGS("s", session_id),
3817                                 SD_BUS_NO_RESULT,
3818                                 method_terminate_session,
3819                                 SD_BUS_VTABLE_UNPRIVILEGED),
3820         SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3821                                 SD_BUS_ARGS("u", uid),
3822                                 SD_BUS_NO_RESULT,
3823                                 method_terminate_user,
3824                                 SD_BUS_VTABLE_UNPRIVILEGED),
3825         SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3826                                 SD_BUS_ARGS("s", seat_id),
3827                                 SD_BUS_NO_RESULT,
3828                                 method_terminate_seat,
3829                                 SD_BUS_VTABLE_UNPRIVILEGED),
3830         SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3831                                 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3832                                 SD_BUS_NO_RESULT,
3833                                 method_set_user_linger,
3834                                 SD_BUS_VTABLE_UNPRIVILEGED),
3835         SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3836                                 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3837                                 SD_BUS_NO_RESULT,
3838                                 method_attach_device,
3839                                 SD_BUS_VTABLE_UNPRIVILEGED),
3840         SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3841                                 SD_BUS_ARGS("b", interactive),
3842                                 SD_BUS_NO_RESULT,
3843                                 method_flush_devices,
3844                                 SD_BUS_VTABLE_UNPRIVILEGED),
3845         SD_BUS_METHOD_WITH_ARGS("PowerOff",
3846                                 SD_BUS_ARGS("b", interactive),
3847                                 SD_BUS_NO_RESULT,
3848                                 method_poweroff,
3849                                 SD_BUS_VTABLE_UNPRIVILEGED),
3850         SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3851                                 SD_BUS_ARGS("t", flags),
3852                                 SD_BUS_NO_RESULT,
3853                                 method_poweroff,
3854                                 SD_BUS_VTABLE_UNPRIVILEGED),
3855         SD_BUS_METHOD_WITH_ARGS("Reboot",
3856                                 SD_BUS_ARGS("b", interactive),
3857                                 SD_BUS_NO_RESULT,
3858                                 method_reboot,
3859                                 SD_BUS_VTABLE_UNPRIVILEGED),
3860         SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3861                                 SD_BUS_ARGS("t", flags),
3862                                 SD_BUS_NO_RESULT,
3863                                 method_reboot,
3864                                 SD_BUS_VTABLE_UNPRIVILEGED),
3865         SD_BUS_METHOD_WITH_ARGS("Halt",
3866                                 SD_BUS_ARGS("b", interactive),
3867                                 SD_BUS_NO_RESULT,
3868                                 method_halt,
3869                                 SD_BUS_VTABLE_UNPRIVILEGED),
3870         SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3871                                 SD_BUS_ARGS("t", flags),
3872                                 SD_BUS_NO_RESULT,
3873                                 method_halt,
3874                                 SD_BUS_VTABLE_UNPRIVILEGED),
3875         SD_BUS_METHOD_WITH_ARGS("Suspend",
3876                                 SD_BUS_ARGS("b", interactive),
3877                                 SD_BUS_NO_RESULT,
3878                                 method_suspend,
3879                                 SD_BUS_VTABLE_UNPRIVILEGED),
3880         SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3881                                 SD_BUS_ARGS("t", flags),
3882                                 SD_BUS_NO_RESULT,
3883                                 method_suspend,
3884                                 SD_BUS_VTABLE_UNPRIVILEGED),
3885         SD_BUS_METHOD_WITH_ARGS("Hibernate",
3886                                 SD_BUS_ARGS("b", interactive),
3887                                 SD_BUS_NO_RESULT,
3888                                 method_hibernate,
3889                                 SD_BUS_VTABLE_UNPRIVILEGED),
3890         SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3891                                 SD_BUS_ARGS("t", flags),
3892                                 SD_BUS_NO_RESULT,
3893                                 method_hibernate,
3894                                 SD_BUS_VTABLE_UNPRIVILEGED),
3895         SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3896                                 SD_BUS_ARGS("b", interactive),
3897                                 SD_BUS_NO_RESULT,
3898                                 method_hybrid_sleep,
3899                                 SD_BUS_VTABLE_UNPRIVILEGED),
3900         SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3901                                 SD_BUS_ARGS("t", flags),
3902                                 SD_BUS_NO_RESULT,
3903                                 method_hybrid_sleep,
3904                                 SD_BUS_VTABLE_UNPRIVILEGED),
3905         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3906                                 SD_BUS_ARGS("b", interactive),
3907                                 SD_BUS_NO_RESULT,
3908                                 method_suspend_then_hibernate,
3909                                 SD_BUS_VTABLE_UNPRIVILEGED),
3910         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3911                                 SD_BUS_ARGS("t", flags),
3912                                 SD_BUS_NO_RESULT,
3913                                 method_suspend_then_hibernate,
3914                                 SD_BUS_VTABLE_UNPRIVILEGED),
3915         SD_BUS_METHOD_WITH_ARGS("Sleep",
3916                                 SD_BUS_ARGS("t", flags),
3917                                 SD_BUS_NO_RESULT,
3918                                 method_sleep,
3919                                 SD_BUS_VTABLE_UNPRIVILEGED),
3920         SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3921                                 SD_BUS_NO_ARGS,
3922                                 SD_BUS_RESULT("s", result),
3923                                 method_can_poweroff,
3924                                 SD_BUS_VTABLE_UNPRIVILEGED),
3925         SD_BUS_METHOD_WITH_ARGS("CanReboot",
3926                                 SD_BUS_NO_ARGS,
3927                                 SD_BUS_RESULT("s", result),
3928                                 method_can_reboot,
3929                                 SD_BUS_VTABLE_UNPRIVILEGED),
3930         SD_BUS_METHOD_WITH_ARGS("CanHalt",
3931                                 SD_BUS_NO_ARGS,
3932                                 SD_BUS_RESULT("s", result),
3933                                 method_can_halt,
3934                                 SD_BUS_VTABLE_UNPRIVILEGED),
3935         SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3936                                 SD_BUS_NO_ARGS,
3937                                 SD_BUS_RESULT("s", result),
3938                                 method_can_suspend,
3939                                 SD_BUS_VTABLE_UNPRIVILEGED),
3940         SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3941                                 SD_BUS_NO_ARGS,
3942                                 SD_BUS_RESULT("s", result),
3943                                 method_can_hibernate,
3944                                 SD_BUS_VTABLE_UNPRIVILEGED),
3945         SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3946                                 SD_BUS_NO_ARGS,
3947                                 SD_BUS_RESULT("s", result),
3948                                 method_can_hybrid_sleep,
3949                                 SD_BUS_VTABLE_UNPRIVILEGED),
3950         SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3951                                 SD_BUS_NO_ARGS,
3952                                 SD_BUS_RESULT("s", result),
3953                                 method_can_suspend_then_hibernate,
3954                                 SD_BUS_VTABLE_UNPRIVILEGED),
3955         SD_BUS_METHOD_WITH_ARGS("CanSleep",
3956                                 SD_BUS_NO_ARGS,
3957                                 SD_BUS_RESULT("s", result),
3958                                 method_can_sleep,
3959                                 SD_BUS_VTABLE_UNPRIVILEGED),
3960         SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3961                                 SD_BUS_ARGS("s", type, "t", usec),
3962                                 SD_BUS_NO_RESULT,
3963                                 method_schedule_shutdown,
3964                                 SD_BUS_VTABLE_UNPRIVILEGED),
3965         SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3966                                 SD_BUS_NO_ARGS,
3967                                 SD_BUS_RESULT("b", cancelled),
3968                                 method_cancel_scheduled_shutdown,
3969                                 SD_BUS_VTABLE_UNPRIVILEGED),
3970         SD_BUS_METHOD_WITH_ARGS("Inhibit",
3971                                 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3972                                 SD_BUS_RESULT("h", pipe_fd),
3973                                 method_inhibit,
3974                                 SD_BUS_VTABLE_UNPRIVILEGED),
3975         SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3976                                 SD_BUS_NO_ARGS,
3977                                 SD_BUS_RESULT("s", result),
3978                                 method_can_reboot_parameter,
3979                                 SD_BUS_VTABLE_UNPRIVILEGED),
3980         SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3981                                 SD_BUS_ARGS("s", parameter),
3982                                 SD_BUS_NO_RESULT,
3983                                 method_set_reboot_parameter,
3984                                 SD_BUS_VTABLE_UNPRIVILEGED),
3985         SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3986                                 SD_BUS_NO_ARGS,
3987                                 SD_BUS_RESULT("s", result),
3988                                 method_can_reboot_to_firmware_setup,
3989                                 SD_BUS_VTABLE_UNPRIVILEGED),
3990         SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3991                                 SD_BUS_ARGS("b", enable),
3992                                 SD_BUS_NO_RESULT,
3993                                 method_set_reboot_to_firmware_setup,
3994                                 SD_BUS_VTABLE_UNPRIVILEGED),
3995         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3996                                 SD_BUS_NO_ARGS,
3997                                 SD_BUS_RESULT("s", result),
3998                                 method_can_reboot_to_boot_loader_menu,
3999                                 SD_BUS_VTABLE_UNPRIVILEGED),
4000         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
4001                                 SD_BUS_ARGS("t", timeout),
4002                                 SD_BUS_NO_RESULT,
4003                                 method_set_reboot_to_boot_loader_menu,
4004                                 SD_BUS_VTABLE_UNPRIVILEGED),
4005         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
4006                                 SD_BUS_NO_ARGS,
4007                                 SD_BUS_RESULT("s", result),
4008                                 method_can_reboot_to_boot_loader_entry,
4009                                 SD_BUS_VTABLE_UNPRIVILEGED),
4010         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
4011                                 SD_BUS_ARGS("s", boot_loader_entry),
4012                                 SD_BUS_NO_RESULT,
4013                                 method_set_reboot_to_boot_loader_entry,
4014                                 SD_BUS_VTABLE_UNPRIVILEGED),
4015         SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
4016                                 SD_BUS_ARGS("s", wall_message, "b", enable),
4017                                 SD_BUS_NO_RESULT,
4018                                 method_set_wall_message,
4019                                 SD_BUS_VTABLE_UNPRIVILEGED),
4020
4021         SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
4022                                 SD_BUS_ARGS("s", session_id, "o", object_path),
4023                                 0),
4024         SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
4025                                 SD_BUS_ARGS("s", session_id, "o", object_path),
4026                                 0),
4027         SD_BUS_SIGNAL_WITH_ARGS("UserNew",
4028                                 SD_BUS_ARGS("u", uid, "o", object_path),
4029                                 0),
4030         SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
4031                                 SD_BUS_ARGS("u", uid, "o", object_path),
4032                                 0),
4033         SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
4034                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
4035                                 0),
4036         SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
4037                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
4038                                 0),
4039         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
4040                                 SD_BUS_ARGS("b", start),
4041                                 0),
4042         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdownWithMetadata",
4043                                 SD_BUS_ARGS("b", start, "a{sv}", metadata),
4044                                 0),
4045         SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
4046                                 SD_BUS_ARGS("b", start),
4047                                 0),
4048
4049         SD_BUS_VTABLE_END
4050 };
4051
4052 const BusObjectImplementation manager_object = {
4053         "/org/freedesktop/login1",
4054         "org.freedesktop.login1.Manager",
4055         .vtables = BUS_VTABLES(manager_vtable),
4056         .children = BUS_IMPLEMENTATIONS(&seat_object,
4057                                         &session_object,
4058                                         &user_object),
4059 };
4060
4061 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
4062         assert(s);
4063         assert(unit);
4064
4065         if (!s->started)
4066                 return 0;
4067
4068         if (result && !streq(result, "done")) {
4069                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
4070
4071                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
4072                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
4073                 return session_send_create_reply(s, &e);
4074         }
4075
4076         return session_send_create_reply(s, NULL);
4077 }
4078
4079 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4080         Manager *m = ASSERT_PTR(userdata);
4081         const char *path, *result, *unit;
4082         uint32_t id;
4083         int r;
4084
4085         assert(message);
4086
4087         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
4088         if (r < 0) {
4089                 bus_log_parse_error(r);
4090                 return 0;
4091         }
4092
4093         if (m->action_job && streq(m->action_job, path)) {
4094                 assert(m->delayed_action);
4095                 log_info("Operation '%s' finished.", handle_action_to_string(m->delayed_action->handle));
4096
4097                 /* Tell people that they now may take a lock again */
4098                 (void) send_prepare_for(m, m->delayed_action, false);
4099
4100                 m->action_job = mfree(m->action_job);
4101                 m->delayed_action = NULL;
4102                 return 0;
4103         }
4104
4105         Session *session;
4106         User *user;
4107
4108         session = hashmap_get(m->session_units, unit);
4109         if (session) {
4110                 if (streq_ptr(path, session->scope_job)) {
4111                         session->scope_job = mfree(session->scope_job);
4112                         (void) session_jobs_reply(session, id, unit, result);
4113
4114                         session_save(session);
4115                         user_save(session->user);
4116                 }
4117
4118                 session_add_to_gc_queue(session);
4119         }
4120
4121         user = hashmap_get(m->user_units, unit);
4122         if (user) {
4123                 /* If the user is stopping, we're tracking stop jobs here. So don't send reply. */
4124                 if (!user->stopping && streq_ptr(path, user->service_job)) {
4125                         user->service_job = mfree(user->service_job);
4126
4127                         LIST_FOREACH(sessions_by_user, s, user->sessions)
4128                                 /* Don't propagate user service failures to the client */
4129                                 (void) session_jobs_reply(s, id, unit, /* error = */ NULL);
4130
4131                         user_save(user);
4132                 }
4133
4134                 user_add_to_gc_queue(user);
4135         }
4136
4137         return 0;
4138 }
4139
4140 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4141         const char *path, *unit;
4142         Manager *m = ASSERT_PTR(userdata);
4143         Session *session;
4144         User *user;
4145         int r;
4146
4147         assert(message);
4148
4149         r = sd_bus_message_read(message, "so", &unit, &path);
4150         if (r < 0) {
4151                 bus_log_parse_error(r);
4152                 return 0;
4153         }
4154
4155         session = hashmap_get(m->session_units, unit);
4156         if (session)
4157                 session_add_to_gc_queue(session);
4158
4159         user = hashmap_get(m->user_units, unit);
4160         if (user)
4161                 user_add_to_gc_queue(user);
4162
4163         return 0;
4164 }
4165
4166 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4167         _cleanup_free_ char *unit = NULL;
4168         Manager *m = ASSERT_PTR(userdata);
4169         const char *path;
4170         Session *session;
4171         User *user;
4172         int r;
4173
4174         assert(message);
4175
4176         path = sd_bus_message_get_path(message);
4177         if (!path)
4178                 return 0;
4179
4180         r = unit_name_from_dbus_path(path, &unit);
4181         if (r == -EINVAL) /* not a unit */
4182                 return 0;
4183         if (r < 0) {
4184                 log_oom();
4185                 return 0;
4186         }
4187
4188         session = hashmap_get(m->session_units, unit);
4189         if (session)
4190                 session_add_to_gc_queue(session);
4191
4192         user = hashmap_get(m->user_units, unit);
4193         if (user)
4194                 user_add_to_gc_queue(user);
4195
4196         return 0;
4197 }
4198
4199 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4200         Manager *m = ASSERT_PTR(userdata);
4201         Session *session;
4202         int b, r;
4203
4204         assert(message);
4205
4206         r = sd_bus_message_read(message, "b", &b);
4207         if (r < 0) {
4208                 bus_log_parse_error(r);
4209                 return 0;
4210         }
4211
4212         if (b)
4213                 return 0;
4214
4215         /* systemd finished reloading, let's recheck all our sessions */
4216         log_debug("System manager has been reloaded, rechecking sessions...");
4217
4218         HASHMAP_FOREACH(session, m->sessions)
4219                 session_add_to_gc_queue(session);
4220
4221         return 0;
4222 }
4223
4224 int manager_send_changed(Manager *manager, const char *property, ...) {
4225         char **l;
4226
4227         assert(manager);
4228
4229         l = strv_from_stdarg_alloca(property);
4230
4231         return sd_bus_emit_properties_changed_strv(
4232                         manager->bus,
4233                         "/org/freedesktop/login1",
4234                         "org.freedesktop.login1.Manager",
4235                         l);
4236 }
4237
4238 static int strdup_job(sd_bus_message *reply, char **job) {
4239         const char *j;
4240         char *copy;
4241         int r;
4242
4243         r = sd_bus_message_read(reply, "o", &j);
4244         if (r < 0)
4245                 return r;
4246
4247         copy = strdup(j);
4248         if (!copy)
4249                 return -ENOMEM;
4250
4251         *job = copy;
4252         return 1;
4253 }
4254
4255 int manager_start_scope(
4256                 Manager *manager,
4257                 const char *scope,
4258                 const PidRef *pidref,
4259                 const char *slice,
4260                 const char *description,
4261                 char **wants,
4262                 char **after,
4263                 const char *requires_mounts_for,
4264                 sd_bus_message *more_properties,
4265                 sd_bus_error *error,
4266                 char **job) {
4267
4268         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4269         int r;
4270
4271         assert(manager);
4272         assert(scope);
4273         assert(pidref_is_set(pidref));
4274         assert(job);
4275
4276         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4277         if (r < 0)
4278                 return r;
4279
4280         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4281         if (r < 0)
4282                 return r;
4283
4284         r = sd_bus_message_open_container(m, 'a', "(sv)");
4285         if (r < 0)
4286                 return r;
4287
4288         if (!isempty(slice)) {
4289                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4290                 if (r < 0)
4291                         return r;
4292         }
4293
4294         if (!isempty(description)) {
4295                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4296                 if (r < 0)
4297                         return r;
4298         }
4299
4300         STRV_FOREACH(i, wants) {
4301                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4302                 if (r < 0)
4303                         return r;
4304         }
4305
4306         STRV_FOREACH(i, after) {
4307                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4308                 if (r < 0)
4309                         return r;
4310         }
4311
4312         if (!empty_or_root(requires_mounts_for)) {
4313                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4314                 if (r < 0)
4315                         return r;
4316         }
4317
4318         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4319          * SIGTERM */
4320         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4321         if (r < 0)
4322                 return r;
4323
4324         r = bus_append_scope_pidref(m, pidref);
4325         if (r < 0)
4326                 return r;
4327
4328         /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
4329            the scope */
4330         r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
4331         if (r < 0)
4332                 return r;
4333
4334         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4335         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4336         if (r < 0)
4337                 return bus_log_create_error(r);
4338
4339         if (more_properties) {
4340                 /* If TasksMax also appears here, it will overwrite the default value set above */
4341                 r = sd_bus_message_copy(m, more_properties, true);
4342                 if (r < 0)
4343                         return r;
4344         }
4345
4346         r = sd_bus_message_close_container(m);
4347         if (r < 0)
4348                 return r;
4349
4350         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4351         if (r < 0)
4352                 return r;
4353
4354         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4355         if (r < 0)
4356                 return r;
4357
4358         return strdup_job(reply, job);
4359 }
4360
4361 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4362         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4363         int r;
4364
4365         assert(manager);
4366         assert(unit);
4367         assert(job);
4368
4369         r = bus_call_method(
4370                         manager->bus,
4371                         bus_systemd_mgr,
4372                         "StartUnit",
4373                         error,
4374                         &reply,
4375                         "ss", unit, "replace");
4376         if (r < 0)
4377                 return r;
4378
4379         return strdup_job(reply, job);
4380 }
4381
4382 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4383         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4384         int r;
4385
4386         assert(manager);
4387         assert(unit);
4388         assert(ret_job);
4389
4390         r = bus_call_method(
4391                         manager->bus,
4392                         bus_systemd_mgr,
4393                         "StopUnit",
4394                         error,
4395                         &reply,
4396                         "ss", unit, job_mode ?: "fail");
4397         if (r < 0) {
4398                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4399                                                   BUS_ERROR_LOAD_FAILED)) {
4400
4401                         *ret_job = NULL;
4402                         sd_bus_error_free(error);
4403                         return 0;
4404                 }
4405
4406                 return r;
4407         }
4408
4409         return strdup_job(reply, ret_job);
4410 }
4411
4412 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4413         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4414         _cleanup_free_ char *path = NULL;
4415         int r;
4416
4417         assert(manager);
4418         assert(scope);
4419
4420         path = unit_dbus_path_from_name(scope);
4421         if (!path)
4422                 return -ENOMEM;
4423
4424         r = sd_bus_call_method(
4425                         manager->bus,
4426                         "org.freedesktop.systemd1",
4427                         path,
4428                         "org.freedesktop.systemd1.Scope",
4429                         "Abandon",
4430                         &error,
4431                         NULL,
4432                         NULL);
4433         if (r < 0) {
4434                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4435                                                    BUS_ERROR_LOAD_FAILED,
4436                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4437                         return 0;
4438
4439                 sd_bus_error_move(ret_error, &error);
4440                 return r;
4441         }
4442
4443         return 1;
4444 }
4445
4446 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4447         assert(manager);
4448         assert(unit);
4449
4450         return bus_call_method(
4451                         manager->bus,
4452                         bus_systemd_mgr,
4453                         "KillUnit",
4454                         error,
4455                         NULL,
4456                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4457 }
4458
4459 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4460         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4461         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4462         _cleanup_free_ char *path = NULL;
4463         const char *state;
4464         int r;
4465
4466         assert(manager);
4467         assert(unit);
4468
4469         path = unit_dbus_path_from_name(unit);
4470         if (!path)
4471                 return -ENOMEM;
4472
4473         r = sd_bus_get_property(
4474                         manager->bus,
4475                         "org.freedesktop.systemd1",
4476                         path,
4477                         "org.freedesktop.systemd1.Unit",
4478                         "ActiveState",
4479                         &error,
4480                         &reply,
4481                         "s");
4482         if (r < 0) {
4483                 /* systemd might have dropped off momentarily, let's
4484                  * not make this an error */
4485                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4486                                                    SD_BUS_ERROR_DISCONNECTED))
4487                         return true;
4488
4489                 /* If the unit is already unloaded then it's not
4490                  * active */
4491                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4492                                                    BUS_ERROR_LOAD_FAILED))
4493                         return false;
4494
4495                 sd_bus_error_move(ret_error, &error);
4496                 return r;
4497         }
4498
4499         r = sd_bus_message_read(reply, "s", &state);
4500         if (r < 0)
4501                 return r;
4502
4503         return !STR_IN_SET(state, "inactive", "failed");
4504 }
4505
4506 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4507         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4508         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4509         int r;
4510
4511         assert(manager);
4512         assert(path);
4513
4514         r = sd_bus_get_property(
4515                         manager->bus,
4516                         "org.freedesktop.systemd1",
4517                         path,
4518                         "org.freedesktop.systemd1.Job",
4519                         "State",
4520                         &error,
4521                         &reply,
4522                         "s");
4523         if (r < 0) {
4524                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4525                                                    SD_BUS_ERROR_DISCONNECTED))
4526                         return true;
4527
4528                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4529                         return false;
4530
4531                 sd_bus_error_move(ret_error, &error);
4532                 return r;
4533         }
4534
4535         /* We don't actually care about the state really. The fact
4536          * that we could read the job state is enough for us */
4537
4538         return true;
4539 }